def daofind(filelist):
iraf.datapars.setParam("exposure", "EXPTIME")
iraf.datapars.setParam("airmass", "AIRMASS")
iraf.datapars.setParam("filter", "INSFILTE")
iraf.datapars.setParam("ccdread", "RDNOISE")
iraf.datapars.setParam("gain", "GAIN")
iraf.centerpars.setParam("calgorithm", "centroid")
iraf.photpars.setParam("apertures", "17.56")
iraf.fitskypars.setParam("annulus", "20.56")
iraf.fitskypars.setParam("dannulus", "5")
with open(filelist) as file1:
for line in file1:
filename = line.strip()
print("Filename %s" % filename)
y,z = np.loadtxt(filename + "-daoedit", usecols=[3,4], unpack=True)
sigma = np.mean(y)
fwhm = np.mean(z)
iraf.datapars.setParam("fwhmpsf", "%s" % str(fwhm) )
iraf.datapars.setParam("sigma", "%s" % str(sigma) )
iraf.daofind.setParam("mode", "h")
iraf.phot.setParam("mode", "h")
iraf.datapars.setParam("mode", "h")
iraf.centerpars.setParam("mode", "h")
iraf.fitskypars.setParam("mode", "h")
iraf.photpars.setParam("mode", "h")
iraf.daofind(filename, filename + "-daofind", mode='h')
iraf.phot(filename, coords=(filename + "-daofind"), output=(filename+".mag"), mode='h')
def daophot(inp, fwhm):
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
iraf.datapars.fwhmpsf = float(fwhm)
iraf.datapars.datamin = 10
iraf.datapars.datamax = 60000
iraf.datapars.sigma = 50
iraf.datapars.readnoise = 2.3
iraf.datapars.epadu = 0.8
iraf.centerpars.calgorithm = 'centroid'
iraf.centerpars.cbox = 6
iraf.fitskypars.annulus = 20
iraf.fitskypars.dannulus = 10
app = str(fwhm) + ":" + str(4 * float(fwhm)) + ":" + "1"
iraf.photpars.apertures = app
iraf.photpars.zmag = 25
iraf.phot(image=inp,
output='default',
verify='No',
verbose='No',
coords='default')
def run_phot(imageRoot,
silent=False,
apertures=[25, 50, 75, 100, 125, 150, 175, 200],
sky_annulus=200,
sky_dannulus=50,
zmag=0):
setup_phot(imageRoot,
apertures=apertures,
zmag=zmag,
silent=silent,
sky_annulus=sky_annulus,
sky_dannulus=sky_dannulus)
image = imageRoot + '.fits'
coords = imageRoot + '.coo'
# Output into current directory, not data directory
rootSplit = imageRoot.split('/')
output = rootSplit[-1] + '.phot.mag'
ir.phot(image, coords, output)
(radius, flux, mag, merr) = get_phot_output(output, silent=silent)
return (radius, flux, mag, merr)
def do_photometry(filename, science_image, aperture_rad=20., use_iraf=True):
"""Do aperture photometry on the difference image"""
image_data = fits.getdata(filename)
image_header = fits.getheader(science_image)
sexa_ra, sexa_dec = image_header['RA'], image_header['DEC']
ra, dec = sexa2deg(sexa_ra, sexa_dec)
x, y = degs2coords(ra, dec, image_header)
if use_iraf:
coords = open('coords.txt', 'w')
coords.write('{0} {1}'.format(x, y))
coords.close()
iraf.datapars.sigma = 20.
iraf.datapars.fwhmpsf = 7.
iraf.photpars.apertures = 15.
outname = filename.replace('.fits', '.mag')
iraf.phot(filename,
coords='coords.txt',
output=outname,
verify='no',
interactive='no')
os.system('rm coords.txt')
mag = open(outname, 'r')
flux = float(mag.readlines()[-1].split()[3])
else:
x, y = [round(float(coord)) for coord in (x, y)]
xind, yind = np.indices(image_data.shape)
phot_pix = np.hypot(x - xind, y - yind) <= aperture_rad
flux = np.sum(image_data[phot_pix])
return flux
def getSkyMeanSDinAnnulus(ann,delta=5):
iraf.noao()
iraf.digiphot()
iraf.apphot()
iraf.photpars.setParam('apertures','1')
iraf.phot.setParam('interactive','no')
iraf.phot.setParam('image',fitsDir+fitsFile)
iraf.phot.setParam('coords',fitsDir+fitsFile+".coo")
outmag=".maglim"
try:
os.remove(fitsDir+fitsFile+outmag)
except:
print "File does not exist BEFORE running phot, so no need to delete."
iraf.phot.setParam('output',fitsDir+fitsFile+outmag)
iraf.phot.setParam('interac','no')
iraf.fitskypars.setParam('annulus',str(ann))
iraf.fitskypars.setParam('dannulus',str(delta))
## NO SIGMA CLIPPING! JUST TO BE SAFE: (6/2013)
iraf.fitskypars.setParam('sloclip',"0")
iraf.fitskypars.setParam('shiclip',"0")
iraf.phot(fitsDir+fitsFile,Stdin=cr)
aa, nn, xx, ss = ao.readPhotMagFile(fitsDir,fitsFile,outmag)
try:
os.remove(fitsDir+fitsFile+outmag)
except:
print "File not found to delete AFTER running phot; that's odd."
return xx
def _get_photometry(self):
""" Get the photometry for the target.
If the target is a standard star, aperture photometry will be performed. For the moment nothing is done with
the others, but in due time (TODO) photometry.py will be included here. """
basename = "standards"
fd, coords_file = tempfile.mkstemp(prefix=basename, suffix=".coords")
os.write(fd, "{0} {1} \n".format(self.RA, self.DEC))
os.close(fd)
if self.objtype == "standard":
iraf.noao(_doprint=0)
iraf.digiphot(_doprint=0)
iraf.apphot(_doprint=0)
seeing = self.header.hdr[self.header.seeingk]
photfile_name = self.header.im_name + ".mag.1"
utilities.if_exists_remove(photfile_name)
kwargs = dict(output=photfile_name, coords=coords_file,
wcsin='world', fwhm=seeing, gain=self.header.gaink, exposure=self.header.exptimek,
airmass=self.header.airmassk, annulus=6*seeing, dannulus=3*seeing,
apert=2*seeing, verbose="no", verify="no", interac="no")
iraf.phot(self.header.im_name, **kwargs)
[counts] = iraf.module.txdump(photfile_name, 'FLUX', 'yes', Stdout=subprocess.PIPE)
utilities.if_exists_remove(coords_file)
return float(counts)
def p60photsub(ofile, inlis, refimage, refstars, ot, filter):
refstars.set_mag(filter)
coofile=open('ot.coo','w')
ot.wcs2pix(refimage)
coofile.write('%10.3f%10.3f\n' % (ot[0].xval, ot[0].yval))
coofile.close()
outfile=open(ofile, 'a+')
p60photutils.p60zeropt(inlis, refstars, filter)
subimage=iraffiles('@%s' % inlis)
for image in subimage:
root,ext=image.split('.')
iraf.phot('%s.sub' % root, coo='ot.coo', output='%s.grb' % root,
interac=no)
stars=Starlist('%s.mag' % root)
refstars.wcs2pix(image)
zp,zpu=stars.zeropt(refstars,method='mean',rejout=0)
otstars=Starlist('%s.grb' % root)
[mjd,utshut]=get_head(image,['OBSMJD','UTSHUT'])
if (len(stars)>0):
outfile.write('%s\t%s\t%.3f\t%.3f\t%.3f\t%.3f\n' % (mjd, utshut, otstars[0].mag+zp, sqrt(pow(zpu,2)+pow(otstars[0].magu,2)), otstars[0].magu, zpu))
outfile.close()
def do_iraf_phot():
""" Runs IRAF photometry with `iraf.phot`.
"""
coofile = os.path.join(path_to_out, 'coo_files', 'teststar_iraf.coo')
outname = os.path.join(path_to_out, 'mag_files', 'teststar_iraf_centroid.mag')
#apertures='1,2,3,4,5,10,12,15,20'
aperture_list = np.arange(0.5,15.5,0.5)
# Make the aperture list IRAF-compatible.
apertures = ''
for ap in aperture_list:
apertures += str(ap) + ','
apertures[:-1]
print(" ")
print(image)
iraf.phot.unlearn()
iraf.phot(image=image+'[0]',
interactive='no',
verify='no',
coords=coofile,
output=outname,
#fwhmpsf=2.5,
#itime=exptime,
calgorithm='centroid',
#cbox=5.0,
#annulus=12.0,
#dannulus=10.0,
apertures=apertures)
def Photometry(setn, flist, band):
# J-band
os.system("head -1 -q %s/xylist/%sf*pos | awk '{print $3}'> tmp" %
(setn, band))
ff = open("tmp")
fr = ff.readlines()
ff.close
r = []
for x in fr:
r.append(float(x))
radi = np.nanmean(r)
print s, band, radi
# aperture,annulus,dannulus
iraf.apphot.photpars.apertures = radi
iraf.apphot.fitskypars.annulus = radi + 4
iraf.apphot.fitskypars.dannulus = 10
for x in flist:
if x[0] in s:
infile = "%s/xylist/%sf%s.pos" % (setn, band, x[1])
outfile = "%s/photometry/%sf%s.mag" % (setn, band, x[1])
dumped = "%s/photometry/%sf%s.txt" % (setn, band, x[1])
fits = "%s/%sf%smasked.fits" % (setn, band, x[1])
print infile, fits
iraf.phot(fits, coords=infile, output=outfile, wcsin="physical")
iraf.txdump(outfile,
fields="xc,yc,mag,merr,flux,msky",
expr="yes",
Stdout=dumped)
def daophot(self, framenum, coords, outfile, apertures, verbose = "no"):
"""
Aperture photometry of stars in the coords file using IRAF PHOT routine.
Parameters
----------
framenum : int
Frame number in the image cube to perform aperture photometry on.
coords : string
Text file with coordinate of the stars
outfile : string
Text file to which photometry results are written
Returns
-------
None
"""
# load iraf packages
self.setiraf()
iraf.delete(outfile)
iraf.phot(image = self.sci_file + "[,," + str(framenum) + "]", coords = coords, output = outfile, fwhmpsf = self.fwhmpsf, sigma = self.sigma, readnoise = self.readnoise, epadu = self.epadu, exposure = self.exposure, calgorithm = self.calgorithm, cbox = self.cbox, maxshift = self.maxshift, salgorithm = self.salgorithm, annulus = self.annulus, dannulus = self.dannulus, apertures = apertures, zmag = self.zmag, interactive = "no", verify = "no", verbose = verbose)
return
def daophot(self, framenum, coords, outfile, apertures, verbose = "no"):
"""
Aperture photometry of stars in the coords file using IRAF PHOT routine.
Parameters
----------
framenum : int
Frame number in the image cube to perform aperture photometry on.
coords : string
Text file with coordinate of the stars
outfile : string
Text file to which photometry results are written
Returns
-------
None
"""
# load iraf packages
self.setiraf()
iraf.delete(outfile)
iraf.phot(image = self.sci_file + "[,," + str(framenum) + "]", coords = coords, output = outfile, fwhmpsf = self.fwhmpsf, sigma = self.sigma, readnoise = self.readnoise, epadu = self.epadu, exposure = self.exposure, calgorithm = self.calgorithm, cbox = self.cbox, maxshift = self.maxshift, salgorithm = self.salgorithm, annulus = self.annulus, dannulus = self.dannulus, apertures = apertures, zmag = self.zmag, interactive = "no", verify = "no", verbose = verbose)
return
def psffit2(img, fwhm, psfstars, hdr, _datamax=45000, psffun='gauss', fixaperture=False):
'''
giving an image, a psffile, calculate the magnitudes of strs in the file _psf.coo
'''
import lsc
_ron = lsc.util.readkey3(hdr, 'ron')
_gain = lsc.util.readkey3(hdr, 'gain')
if not _ron:
_ron = 1
print 'warning ron not defined'
if not _gain:
_gain = 1
print 'warning ron not defined'
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
zmag = 0.
varord = 0 # -1 analitic 0 - numeric
if fixaperture:
print 'use fix aperture 5 8 10'
hdr = lsc.util.readhdr(img+'.fits')
_pixelscale = lsc.util.readkey3(hdr, 'PIXSCALE')
a1, a2, a3, a4, = float(5. / _pixelscale), float(5. / _pixelscale), float(8. / _pixelscale), float(
10. / _pixelscale)
else:
a1, a2, a3, a4, = int(fwhm + 0.5), int(fwhm * 2 + 0.5), int(fwhm * 3 + 0.5), int(fwhm * 4 + 0.5)
iraf.fitskypars.annulus = a4
iraf.fitskypars.salgori = 'mean' #mode,mean,gaussian
iraf.photpars.apertures = '%d,%d,%d' % (a2, a3, a4)
iraf.datapars.datamin = -100
iraf.datapars.datamax = _datamax
iraf.datapars.readnoise = _ron
iraf.datapars.epadu = _gain
iraf.datapars.exposure = 'EXPTIME'
iraf.datapars.airmass = ''
iraf.datapars.filter = ''
iraf.photpars.zmag = zmag
iraf.centerpars.calgori = 'centroid'
iraf.centerpars.cbox = a2
iraf.daopars.recenter = 'yes'
iraf.delete('_psf2.ma*', verify=False)
iraf.phot(img+'[0]', '_psf2.coo', '_psf2.mag', interac=False, verify=False, verbose=False)
iraf.daopars.psfrad = a4
iraf.daopars.functio = psffun
iraf.daopars.fitrad = a1
iraf.daopars.fitsky = 'yes'
iraf.daopars.sannulus = a4
iraf.daopars.recenter = 'yes'
iraf.daopars.varorder = varord
iraf.delete("_als2,_psf.grp,_psf.nrj", verify=False)
iraf.group(img + '[0]', '_psf2.mag', img + '.psf', '_psf.grp', verify=False, verbose=False)
iraf.nstar(img + '[0]', '_psf.grp', img + '.psf', '_als2', '_psf.nrj', verify=False, verbose=False)
photmag = iraf.txdump("_psf2.mag", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
fitmag = iraf.txdump("_als2", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
return photmag, fitmag
def psffit2(img, fwhm, psfstars, hdr, _datamax, psffun='gauss', fixaperture=False):
'''
giving an image, a psffile, calculate the magnitudes of strs in the file _psf.coo
'''
import lsc
_ron = lsc.util.readkey3(hdr, 'ron')
_gain = lsc.util.readkey3(hdr, 'gain')
if not _ron:
_ron = 1
print 'warning ron not defined'
if not _gain:
_gain = 1
print 'warning ron not defined'
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
zmag = 0.
varord = 0 # -1 analitic 0 - numeric
if fixaperture:
print 'use fix aperture 5 8 10'
hdr = lsc.util.readhdr(img+'.fits')
_pixelscale = lsc.util.readkey3(hdr, 'PIXSCALE')
a1, a2, a3, a4, = float(5. / _pixelscale), float(5. / _pixelscale), float(8. / _pixelscale), float(
10. / _pixelscale)
else:
a1, a2, a3, a4, = int(fwhm + 0.5), int(fwhm * 2 + 0.5), int(fwhm * 3 + 0.5), int(fwhm * 4 + 0.5)
iraf.fitskypars.annulus = a4
iraf.fitskypars.salgori = 'mean' #mode,mean,gaussian
iraf.photpars.apertures = '%d,%d,%d' % (a2, a3, a4)
iraf.datapars.datamin = -100
iraf.datapars.datamax = _datamax
iraf.datapars.readnoise = _ron
iraf.datapars.epadu = _gain
iraf.datapars.exposure = 'EXPTIME'
iraf.datapars.airmass = ''
iraf.datapars.filter = ''
iraf.photpars.zmag = zmag
iraf.centerpars.calgori = 'centroid'
iraf.centerpars.cbox = a2
iraf.daopars.recenter = 'yes'
iraf.delete('_psf2.ma*', verify=False)
iraf.phot(img+'[0]', '_psf2.coo', '_psf2.mag', interac=False, verify=False, verbose=False)
iraf.daopars.psfrad = a4
iraf.daopars.functio = psffun
iraf.daopars.fitrad = a1
iraf.daopars.fitsky = 'yes'
iraf.daopars.sannulus = a4
iraf.daopars.recenter = 'yes'
iraf.daopars.varorder = varord
iraf.delete("_als2,_psf.grp,_psf.nrj", verify=False)
iraf.group(img + '[0]', '_psf2.mag', img + '.psf', '_psf.grp', verify=False, verbose=False)
iraf.nstar(img + '[0]', '_psf.grp', img + '.psf', '_als2', '_psf.nrj', verify=False, verbose=False)
photmag = iraf.txdump("_psf2.mag", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
fitmag = iraf.txdump("_als2", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
return photmag, fitmag
def get_fake_centroid(filename,x,y,instrument,filt):
"""
Locate the center of a fake psf
INPUTS: The fake-SN psf image in filename, the expected x,y position
of the center of the psf, the instrument and filter being modeled.
RETURNS: xcentroid, ycentroid, fluxcorr
"""
from pyraf import iraf
iraf.digiphot(_doprint=0)
iraf.apphot(_doprint=0)
iraf.unlearn(iraf.apphot.phot)
iraf.unlearn(iraf.datapars)
iraf.unlearn(iraf.centerpars)
#Use the centroid algorithm right now as it seems more robust to geometric distortion.
iraf.centerpars.calgorithm = 'centroid'
iraf.centerpars.cbox = 5.0
iraf.unlearn(iraf.fitskypars)
iraf.unlearn(iraf.photpars)
photparams = {
'interac':False,
'radplot':False,
}
iraf.datapars.readnoise = 0.0
iraf.datapars.itime = 1.0
iraf.datapars.epadu = 1.0
# iraf.digiphot.apphot.fitskypars :
iraf.unlearn(iraf.fitskypars)
iraf.fitskypars.salgorithm = 'constant'
iraf.fitskypars.skyvalue = 0.0
# iraf.digiphot.apphot.photpars :
iraf.unlearn(iraf.photpars)
iraf.photpars.weighting = 'constant'
iraf.photpars.apertures = 20 # TODO : set this more intelligently !
iraf.photpars.zmag = 25
iraf.photpars.mkapert = False
#Write the coordinate file starting as position x and y
coxyfile = 'centroid.xycoo'
coxy = open(coxyfile, 'w')
print >> coxy, "%10.2f %10.2f" % (x,y)
coxy.close()
if os.path.exists('centroid.mag'): os.remove('centroid.mag')
iraf.phot(image=filename, skyfile='', coords=coxyfile, output='centroid.mag',
verify=False, verbose=True, Stdout=1, **photparams)
f = open('centroid.mag', 'r')
maglines = f.readlines()
f.close()
xcentroid = float(maglines[76].split()[0])
ycentroid = float(maglines[76].split()[1])
return xcentroid,ycentroid
def photometry(color, images):
#grab the aligned images
#images=sorted(glob.glob('reduced/'+color+'align/*fits'))
for i in images:
iraf.phot(i, coords='reduced/'+color+'align/coords.lis',
fwhmpsf=3,datamin=-500.,datamax=10000.,readnoise=20.,epadu=7.2,
exposur="EXPTIME",airmass="SECZ",obstime="JD",filter="IRFLTID",annulus=15,
dannulu=7, apertur="9",verify='no',output=i+".MC")
return
def psffit2(img, fwhm, psfstars, hdr, _datamax=45000, psffun='gauss', fixaperture=False):
import agnkey
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
zmag = 0.
varord = 0 # -1 analitic 0 - numeric
if fixaperture:
print 'use fix aperture 5 8 10'
hdr = agnkey.util.readhdr(img+'.fits')
_pixelscale = agnkey.util.readkey3(hdr, 'PIXSCALE')
a1, a2, a3, a4, = float(5. / _pixelscale), float(5. / _pixelscale), float(8. / _pixelscale), float(
10. / _pixelscale)
else:
a1, a2, a3, a4, = int(fwhm + 0.5), int(fwhm * 2 + 0.5), int(fwhm * 3 + 0.5), int(fwhm * 4 + 0.5)
_center='no'
iraf.fitskypars.annulus = a4
iraf.fitskypars.dannulus = a4
iraf.noao.digiphot.daophot.daopars.sannulus = int(a4)
iraf.noao.digiphot.daophot.daopars.wsannul = int(a4)
iraf.fitskypars.salgori = 'mean' #mode,mean,gaussian
iraf.photpars.apertures = '%d,%d,%d' % (a2, a3, a4)
# iraf.photpars.apertures = '%d,%d,%d'%(a2,a3,a4)
iraf.datapars.datamin = -100
iraf.datapars.datamax = _datamax
iraf.datapars.readnoise = agnkey.util.readkey3(hdr, 'ron')
iraf.datapars.epadu = agnkey.util.readkey3(hdr, 'gain')
iraf.datapars.exposure = 'exptime' #agnkey.util.readkey3(hdr,'exptime')
iraf.datapars.airmass = 'airmass'
iraf.datapars.filter = 'filter2'
iraf.centerpars.calgori = 'gauss'
iraf.centerpars.cbox = 1
iraf.daopars.recenter = _center
iraf.photpars.zmag = zmag
iraf.delete('_psf2.ma*', verify=False)
iraf.phot(img+'[0]', '_psf2.coo', '_psf2.mag', interac=False, verify=False, verbose=False)
iraf.daopars.psfrad = a4
iraf.daopars.functio = psffun
iraf.daopars.fitrad = a1
iraf.daopars.fitsky = 'yes'
iraf.daopars.sannulus = int(a4)
iraf.daopars.wsannul = int(a4)
iraf.daopars.recenter = _center
iraf.daopars.varorder = varord
iraf.delete("_als,_psf.grp,_psf.nrj", verify=False)
iraf.group(img+'[0]', '_psf2.mag', img + '.psf', '_psf.grp', verify=False, verbose=False)
iraf.nstar(img+'[0]', '_psf.grp', img + '.psf', '_als', '_psf.nrj', verify=False, verbose=False)
photmag = iraf.txdump("_psf2.mag", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
fitmag = iraf.txdump("_als", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
return photmag, fitmag
def psffit2(img, fwhm, psfstars, hdr, _datamax=45000, psffun='gauss', fixaperture=False):
import agnkey
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
zmag = 0.
varord = 0 # -1 analitic 0 - numeric
if fixaperture:
print 'use fix aperture 5 8 10'
hdr = agnkey.util.readhdr(img+'.fits')
_pixelscale = agnkey.util.readkey3(hdr, 'PIXSCALE')
a1, a2, a3, a4, = float(5. / _pixelscale), float(5. / _pixelscale), float(8. / _pixelscale), float(
10. / _pixelscale)
else:
a1, a2, a3, a4, = int(fwhm + 0.5), int(fwhm * 2 + 0.5), int(fwhm * 3 + 0.5), int(fwhm * 4 + 0.5)
_center='no'
iraf.fitskypars.annulus = a4
iraf.fitskypars.dannulus = a4
iraf.noao.digiphot.daophot.daopars.sannulus = int(a4)
iraf.noao.digiphot.daophot.daopars.wsannul = int(a4)
iraf.fitskypars.salgori = 'mean' #mode,mean,gaussian
iraf.photpars.apertures = '%d,%d,%d' % (a2, a3, a4)
# iraf.photpars.apertures = '%d,%d,%d'%(a2,a3,a4)
iraf.datapars.datamin = -100
iraf.datapars.datamax = _datamax
iraf.datapars.readnoise = agnkey.util.readkey3(hdr, 'ron')
iraf.datapars.epadu = agnkey.util.readkey3(hdr, 'gain')
iraf.datapars.exposure = 'exptime' #agnkey.util.readkey3(hdr,'exptime')
iraf.datapars.airmass = 'airmass'
iraf.datapars.filter = 'filter2'
iraf.centerpars.calgori = 'gauss'
iraf.centerpars.cbox = 1
iraf.daopars.recenter = _center
iraf.photpars.zmag = zmag
iraf.delete('_psf2.ma*', verify=False)
iraf.phot(img+'[0]', '_psf2.coo', '_psf2.mag', interac=False, verify=False, verbose=False)
iraf.daopars.psfrad = a4
iraf.daopars.functio = psffun
iraf.daopars.fitrad = a1
iraf.daopars.fitsky = 'yes'
iraf.daopars.sannulus = int(a4)
iraf.daopars.wsannul = int(a4)
iraf.daopars.recenter = _center
iraf.daopars.varorder = varord
iraf.delete("_als,_psf.grp,_psf.nrj", verify=False)
iraf.group(img+'[0]', '_psf2.mag', img + '.psf', '_psf.grp', verify=False, verbose=False)
iraf.nstar(img+'[0]', '_psf.grp', img + '.psf', '_als', '_psf.nrj', verify=False, verbose=False)
photmag = iraf.txdump("_psf2.mag", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
fitmag = iraf.txdump("_als", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
return photmag, fitmag
def recentre(image,refcoordfile):
"""Returns improved shift by centroiding
on the reference star using phot. This can be VERY
sensitive to the parameters in centerpars."""
xin,yin = load(refcoordfile,unpack=True)
try:
iraf.phot(image,refcoordfile,'temp.mag',inter="no",calgorithm='centroid',
mode='h',verify='no',update='no',verbose='no')
xout,yout=iraf.pdump('temp.mag','xcen,ycen','yes',Stdout=1)[0].split()
except:
print "Recentring failed on", image
return 0.,0.
xout,yout = float(xout),float(yout)
return xout-xin,yout-yin
def psf(args):
""" Calculate the PSF of an image.
"""
# Read the seeing and sigma of the sky from the header
seeing, sigma = utils.get_from_header(args.input, args.FWHM_key, args.sigma)
# Do photometry on the image
#print "photometry: \n"
photfile_name = args.input + ".mag.1"
utils.if_exists_remove(photfile_name)
iraf.phot(args.input, output=photfile_name, coords=args.stars,
wcsin=args.coords, fwhm=seeing,
sigma=sigma, datamax=args.maxval, datamin=args.minval,
ccdread=args.ron_key, gain=args.gain_key, exposure=args.expt_key,
airmass=args.airm_key, annulus=36, dannulus=18,
apert=18, verbose="no", verify="no", interac="no")
# Select stars on the image
#print "pstselect: \n"
pstfile_name = args.input + ".pst.1"
utils.if_exists_remove(pstfile_name)
iraf.pstselect(args.input, photfile=photfile_name, pstfile=pstfile_name,
maxnpsf=20, fwhm=seeing, sigma=sigma,
datamax=args.maxval, ccdread=args.ron_key, gain=args.gain_key,
exposure=args.expt_key, function="auto", nclean=1,
psfrad=36, fitrad=18, maxnstar=20, verbose="no", interac="no",
verify="no")
# Build psf of the stars
#print "psf: \n"
psffile_table = args.input + ".psf.1.fits" # iraf keeps adding the .fits :(
psgfile_name = args.input + ".psg.1"
pstfile_name2 = args.input + ".pst.2"
utils.if_exists_remove(psffile_table,psgfile_name, pstfile_name2)
iraf.psf( args.input, photfile=photfile_name, pstfile=pstfile_name,
groupfile=psgfile_name, opstfile=pstfile_name2,
psfimage=psffile_table,fwhm=seeing, sigma=sigma, datamax=args.maxval,
datamin=args.minval, ccdread=args.ron_key, gain=args.gain_key,
exposure=args.expt_key, function="moffat25", nclean=1,
psfrad=36, fitrad=18, maxnstar=20, interactive="no",
varorder=args.varorder, verbose="no",verify="no")
# Use seepsf to build the image of the psf
psffile_name = args.input + ".psf.fits"
utils.if_exists_remove(psffile_name)
iraf.seepsf(psffile_table, psffile_name)
return psffile_name
def aperphot(
imgs,
posname,
aper1,
aper2,
aper3,
):
postfix = '.obs'
for i in xrange(len(imgs)):
basename, exten = os.path.splitext(imgs[i])
photname = basename + postfix
meanpsf = 2.0
std = 70.0
iraf.display(imgs[i], frame=1)
iraf.tvmark(frame=1,
coords=posname,
autolog='No',
mark='circle',
radii=30,
lengths=3,
font='raster',
color=204,
label='No',
number='Yes',
txsize=3)
iraf.datapars.ccdread = 'CCDRON'
iraf.datapars.gain = 'CCDGAIN'
iraf.datapars.scale = 1.0
iraf.datapars.fwhmpsf = meanpsf
iraf.datapars.sigma = std
iraf.datapars.filter = 'INSFLNAM'
iraf.datapars.datamax = 1000000.0
iraf.centerpars.cbox = 8.0
iraf.centerpars.calgorithm = 'centroid'
iraf.fitskypars.salgorithm = 'median'
iraf.fitskypars.annulus = aper2 # ------ important ------
iraf.fitskypars.dannulus = aper3 # ------ important ------
#iraf.photpars.apertures = meanpsf # ------ important ------
iraf.photpars.apertures = aper1 # ------ important ------
iraf.phot(image=imgs[i],
coords=posname,
output=photname,
interactive=False,
verify=False)
def apply_phot(args):
# Temporary file
with tempfile.NamedTemporaryFile(suffix=".mag.1") as fd:
phot_modstars = fd.name
with tempfile.NamedTemporaryFile(suffix=".mag.1") as fd2:
phot_subtstars = fd2.name
hdr = args.image.header # for short
seeing, sigma = utils.get_from_header(args.image.im_name, hdr.seeingk, hdr.sigmak)
iraf.phot(
args.image.im_name,
output=phot_modstars,
coords=args.model_stars,
wcsin=args.coords,
fwhmpsf=seeing,
sigma=sigma,
ccdread=hdr.ccdronk,
gain=hdr.gaink,
exposure=hdr.exptimek,
airmass=hdr.airmassk,
annulus=6 * seeing,
dannulus=3 * seeing,
apert=3 * seeing,
verbose="no",
verify="no",
interac="no",
)
iraf.phot(
args.image.im_name,
output=phot_subtstars,
coords=args.subt_stars,
wcsin=args.coords,
fwhmpsf=seeing,
sigma=sigma,
ccdread=hdr.ccdronk,
gain=hdr.gaink,
exposure=hdr.exptimek,
airmass=hdr.airmassk,
annulus=6 * seeing,
dannulus=3 * seeing,
apert=3 * seeing,
verbose="no",
verify="no",
interac="no",
)
return phot_modstars, phot_subtstars
def p48coaddphot(inlis, refstars, ot, filter, outfile):
outf = open(outfile, "w")
for image in inlis:
root = image.split(".")[0]
# Get the seeing in the image
iqpkg.iqobjs(image, SIGMA, get_head(image, "SATURATE"), skyval="0.0")
seepix = get_head(image, "SEEPIX")
# Calculate zeropoint
refstars.wcs2pix(image)
refstars.set_mag(filter)
xyfile = open("%s.xy" % root, "w")
for star in refstars:
xyfile.write("%10.3f%10.3f\n" % (star.xval, star.yval))
xyfile.close()
iraf.phot(image, coords="%s.xy" % root, output="%s.mag" % root,
aperture=1.2*float(seepix), interac=no)
stars = Starlist("%s.mag" % root)
zp, zpu = stars.zeropt(refstars,method="mean",rejout=0)
# Measure source
ot.wcs2pix(image)
coofile = open("%s.coo" % root, "w")
coofile.write("%10.3f%10.3f\n" % (ot[0].xval, ot[0].yval))
coofile.close()
iraf.phot(image, coords="%s.coo" % root, output="%s.ot" % root,
aperture=1.2*float(seepix), calgorithm="none", interac=no)
stars = Starlist("%s.ot" % root)
# Just return 99 for non-detection
if len(stars)==1:
smag = stars[0].mag
smagu = stars[0].magu
mag = smag + zp
else:
mag = 99.0
smagu = 99.0
mjdobs = DateTimeFrom(get_head(image, OBSDATEKEY)).mjd
exptime = get_head(image, EXPTIMEKEY)
outf.write("%15.3f%10.1f%10.3f%10.3f%10.3f\n" % (mjdobs, exptime, mag, smagu, zpu))
outf.close()
def detect_stars(f,params):
print 'Detecting stars in',f.name
print 'Current directory is', os.getcwd()
fp = params.loc_output+os.path.sep
fn = f.fullname
iraf.digiphot()
iraf.daophot()
print 'FWHM = ',f.fw
nstars = 0
thresh = 100
while (nstars < 2*params.nstamps) and (thresh > 1.5):
print 'thresh = ',thresh
for d in ['temp.stars','temp.phot']:
if os.path.exists(fp+d):
os.system('/bin/rm '+fp+d)
iraf.daofind(image=fn,output=fp+'temp.stars',interactive='no',verify='no',
threshold=thresh,sigma=30,fwhmpsf=f.fw,
datamin=params.pixel_min,datamax=params.pixel_max,
epadu=params.gain,readnoise=params.readnoise,
noise='poisson')
iraf.phot(image=fn,output=fp+'temp.phot',coords=fp+'temp.stars',interactive='no',
verify='no',
sigma=30,fwhmpsf=f.fw,datamin=params.pixel_min,
datamax=params.pixel_max,epadu=params.gain,
readnoise=params.readnoise,noise='poisson',Stdout='/dev/null')
nstars = 0
if os.path.exists(fp+'temp.phot'):
iraf.psort(infiles=fp+'temp.phot',field='MAG')
iraf.prenumber(infile=fp+'temp.phot')
s = iraf.pdump(infiles=fp+'temp.phot',Stdout=1,fields='ID,XCENTER,YCENTER,MAG',
expr='yes')
stars = np.zeros([len(s),3])
i = 0
for line in s:
mag = line.split()[3]
if not(mag == 'INDEF'):
stars[i,:] = np.array(map(float,line.split()[1:4]))
i += 1
nstars = i
thresh = thresh*0.5
if nstars == 0:
print 'Error: could not detect stars in',fn
return None
stars = stars[:i,:].copy()
sys.old_stdout = sys.stdout
return stars
def transform(self, image: Image):
if not self.requirements_check(image):
raise ValueError(
"Missing required transformations on image. Need:" +
str(self.REQUIRES))
# INIT
from pyraf import iraf
iraf.noao.digiphot(_doprint=0)
iraf.noao.digiphot.daophot(_doprint=0)
capable.OF_GRAPHICS = False
# File handling
temp_final_out = CONFIG["FILE_DUMP"] + 'TempPhotOut.dat'
if os.path.exists(temp_final_out):
os.remove(temp_final_out)
base = image.fixed_parameters["path"].split('/')[-1]
dao_phot_out = CONFIG["FILE_DUMP"] + base + ".mag.dat"
phot_txt_out = CONFIG["FILE_DUMP"] + base + "PhoTxOut.dat"
# Setting pyraf phot parameters
photpars = iraf.photpars.getParList()
iraf.photpars.setParam('apertures', CONFIG["APERTURE"])
iraf.phot.setParam('image', image.fixed_parameters["path"])
iraf.phot.setParam('coords', self._get_coordinates_file(image))
iraf.phot.setParam('verify', 'no')
iraf.phot.setParam('output', dao_phot_out)
iraf.phot.setParam('interactive', 'no')
if os.path.exists(dao_phot_out):
os.remove(dao_phot_out)
# Running IRAF task
dump = iraf.phot(mode='h', Stdout=1)
if os.path.exists(phot_txt_out):
os.remove(phot_txt_out)
# Getting better formatted file with magnitudes
iraf.txdump(dao_phot_out,
'XCENTER,YCENTER,MAG,MERR',
'yes',
Stdout=phot_txt_out)
# Getting results from output file
with open(phot_txt_out) as output_file:
results = {}
i = 0
for lines in output_file:
parts = lines.split()
results[self.objects[i].fixed_parameters["id"]] = (
float(parts[2]) if parts[2] != "INDEF" else None,
float(parts[3]) if parts[3] != "INDEF" else None)
i += 1
image.processing_parameters["photometry"] = results
return image
def simplepsfphot(image,coords,psf,refstar,centre=True,vary=False):
"""PSF photometry, with a given PSF file in psf used for every image"""
iraf.dele('temp.mag*')
iraf.dele('temp.als')
iraf.dele('temp.sub.fits')
if centre:
xsh,ysh = recentre(image,refstar)
print "Fine Centring: ", xsh,ysh
else: xsh,ysh = 0,0
if vary:
setaperture(image,refstar)
shift_file_coords(coords,xsh,ysh,'tempcoords2',sort='als')
iraf.phot(image,'tempcoords2','temp.mag2',inter="no",calgorithm='none',
mode='h',verify='no',update='no',verbose='no')
iraf.allstar(image,'temp.mag2',psf,'temp.als','temp.mag.arj','temp.sub.fits',
mode='h',verify='no',update='no',verbose='no')
out = iraf.pdump('temp.als','id,mag,merr,msky','yes',Stdout=1)
return out
def apphot(image,coords,refstar=None,centre=False,vary=False):
"""Apperture photometry with centering based on a reference star.
NB: centre refers to shifting the coordinates by centroiding on the
reference star; recentering on the final phot depends on
centerpars.calgorithm ."""
iraf.dele('temp.mag*')
if centre:
xsh,ysh = recentre(image,refstar)
print "Fine centring: ", xsh,ysh
else: #no recentreing by reference star (but could still have calgorithm!=none)
xsh,ysh = 0,0
if vary:
setaperture(image,refstar)
shift_file_coords(coords,xsh,ysh,'tempcoords')
iraf.phot(image,'tempcoords','temp.mag2',inter="no",
mode='h',verify='no',update='no',verbose='no')
out = iraf.pdump('temp.mag2','id,flux,msky,stdev','yes',Stdout=1)
return out
def createMagFile(inputDir, inputFile, useCoordFile, outputFile, fullyAutomatic=False, aperturesString='5,10,15,20', bestSkyAperture='100'):
cr=['\n']
iraf.cd(inputDir)
iraf.noao()
iraf.digiphot()
iraf.apphot()
iraf.phot.setParam('interactive','no')
iraf.centerpars.setParam('cbox','5')
iraf.photpars.setParam('apertures',aperturesString)
iraf.fitskypars.setParam('annulus',bestSkyAperture)
iraf.fitskypars.setParam('dannulus','10')
iraf.phot.setParam('image',inputFile)
iraf.phot.setParam('coords',useCoordFile)
iraf.phot.setParam('output',outputFile)
if fullyAutomatic: ## If you use this option, it will not prompt you for any of the aperture/sky settings
iraf.phot(mode='h',Stdin=cr)
else: # Otherwise, you can change them at will, and get to press enter a bunch
iraf.phot(mode='h')
def run_daophot(image, outfile='default', coordfile='NA', apertures='5.0,16.66', annulus=17.0, dannulus=3.0, calgorithm='centroid', salgorithm='median', fwhmpsf=2.5, backsigma=-1.0,rdnoise=5.2):
'''THIS PROCEDURE RUNS DAOPHOT ON INPUT IMAGE'''
# Parse input parameters
if outfile == 'default': outfile = image + '0.mag.1'
if coordfile == 'NA': coordfile = image + '0.coo.1'
# Read in fits header
f = pyfits.open(image)
fheader = f[0].header
f.close()
# Extract relevant info from the header
exptime = fheader['texptime']
filter = fheader['FILTER2']
ipxscl = fheader['D001ISCL']
opxscl = fheader['D001SCAL']
num_flts = float(fheader['NDRIZIM'])/2.0
dp_zmag = -2.5 * np.log10(float(fheader['PHOTFLAM'])) + float(fheader['PHOTZPT']) # zero-pt for each filter
#df_max = 10000000. # upper limit for "good" pixels (sometimes used to ID bad pixels). Not using this parameter right now.
# Perform read noise correction
rdnoise_corr = np.sqrt(num_flts * (rdnoise * opxscl/ipxscl)**2)
# Perform background noise calculation
if backsigma < 0.0:
backrms=iraf.imstatistics(image+'[0]', fields='stddev', nclip=10, lsigma=3.0, usigma=3.0, cache='yes', format='no',Stdout=1)
backsigma=float(backrms[0])
'''Run daophot'''
# Remove old phot output files
file_query = os.access(outfile, os.R_OK)
if file_query == True: os.remove(outfile)
# Run phot
iraf.phot.unlearn() # reset daophot parameters to default values
iraf.phot(image=image+'[0]', interactive='no', verify='no', coords=coordfile, output=outfile, fwhmpsf=fwhmpsf, \
sigma=backsigma, readnoise=rdnoise_corr, itime=exptime, calgorithm=calgorithm, salgorithm=salgorithm, \
annulus=annulus, dannulus=dannulus, apertures=apertures,zmag=dp_zmag)
return outfile # return name of output catalog
def calc_curve_of_growth(dataDir, image, apertures):
aper = apertures
# ==========
# Make a coordinate file, PSF is in the middle
# ==========
# get image size
data = pyfits.getdata(dataDir + image + '_psf.fits')
imgSize = data.shape[0]
# Write out coo file
cooFile = image + '_psf.coo'
_coo = open(cooFile, 'w')
_coo.write('%.2f %.2f\n' % (imgSize/2.0, imgSize/2.0))
_coo.close()
# #########
# Setup phot for running on PSF
# #########
ph.setup_phot(dataDir + image + '_psf', apertures=aper)
ir.fitskypars.salgorithm = 'constant'
ir.fitskypars.skyvalue = 0.0
# Output into current directory, not data directory
input = dataDir + image + '_psf.fits'
output = workDir + image + '_psf.phot.mag'
ir.phot(input, cooFile, output, verbose="no")
(radius, flux, mag, merr) = ph.get_phot_output(output, silent=True)
diff = np.zeros(len(radius), dtype=float)
diff[1:] = mag[1:] - mag[:-1]
# Save output
pfile = open(workDir + 'cog_' + image + '.dat', 'w')
pickle.dump(radius, pfile)
pickle.dump(flux, pfile)
pickle.dump(mag, pfile)
pickle.dump(merr, pfile)
pickle.dump(diff, pfile)
pfile.close()
return (radius, flux, mag, merr, diff)
def run_phot(imageRoot, silent=False,
apertures=[25,50,75,100,125,150,175,200],
sky_annulus=200, sky_dannulus=50, zmag=0):
setup_phot(imageRoot, apertures=apertures, zmag=zmag, silent=silent,
sky_annulus=sky_annulus, sky_dannulus=sky_dannulus)
image = imageRoot + '.fits'
coords = imageRoot + '.coo'
# Output into current directory, not data directory
rootSplit = imageRoot.split('/')
output = rootSplit[-1] + '.phot.mag'
ir.phot(image, coords, output)
(radius, flux, mag, merr) = get_phot_output(output, silent=silent)
return (radius, flux, mag, merr)
def calc_curve_of_growth(dataDir, image, apertures):
aper = apertures
# ==========
# Make a coordinate file, PSF is in the middle
# ==========
# get image size
data = pyfits.getdata(dataDir + image + '_psf.fits')
imgSize = data.shape[0]
# Write out coo file
cooFile = image + '_psf.coo'
_coo = open(cooFile, 'w')
_coo.write('%.2f %.2f\n' % (imgSize / 2.0, imgSize / 2.0))
_coo.close()
# #########
# Setup phot for running on PSF
# #########
ph.setup_phot(dataDir + image + '_psf', apertures=aper)
ir.fitskypars.salgorithm = 'constant'
ir.fitskypars.skyvalue = 0.0
# Output into current directory, not data directory
input = dataDir + image + '_psf.fits'
output = workDir + image + '_psf.phot.mag'
ir.phot(input, cooFile, output, verbose="no")
(radius, flux, mag, merr) = ph.get_phot_output(output, silent=True)
diff = np.zeros(len(radius), dtype=float)
diff[1:] = mag[1:] - mag[:-1]
# Save output
pfile = open(workDir + 'cog_' + image + '.dat', 'w')
pickle.dump(radius, pfile)
pickle.dump(flux, pfile)
pickle.dump(mag, pfile)
pickle.dump(merr, pfile)
pickle.dump(diff, pfile)
pfile.close()
return (radius, flux, mag, merr, diff)
def doPhotometryACS(self, file, inputcoords, apertures, zeropoint, bgsigma, skyann, skydann): ''' This function can be used to do photometry from a given image. Input parameters can be varied, however, the task assumes that photometry is done from an ACS image and the exposure time is found from the header of the file. Object recentering is done with centroid algorithm and shifts up to 6 pixels are possible. For skyfitting algorithm mode is adopted. ''' #load packages, should supress the output I.digiphot() I.apphot() #setting up for ACS I.datapar(sigma = bgsigma, exposure = 'exptime', gain = 'ccdgain') I.centerpars(calgorithm = 'centroid', cbox = 10., maxshift = 6.) I.fitskypars(salgorithm = 'mode', annulus = skyann, \ dannulus = skydann, skyvalue = 0.) I.photpars(apertures = apertures, zmag = zeropoint) I.phot(file, coords=inputcoords, verify='no', verbose = 'no')
def _get_photometry(self, seeing=None, aperture=None):
""" Get the photometry for the target.
If the target is a standard star, aperture photometry will be performed. For the moment nothing is done with
the others, but in due time (TODO) photometry.py will be included here. """
if self.objtype is not "standards":
return None
basename = "standards"
fd, coords_file = tempfile.mkstemp(prefix=basename, suffix=".coords")
os.write(fd, "{0} {1} \n".format(self.RA, self.DEC))
os.close(fd)
# If aperture was not given by the user, try and use the seeing as a reference for default values
if not aperture:
try:
seeing = self.header.hdr[self.header.seeingk]
aperture = 3 * seeing
except ValueError: # keyword was not correctly guessed
pass
# If aperture exists, do the photometry using it
if aperture:
annulus = 2 * aperture
dannulus = max([aperture, 3]) # minimum of 3 pixels thickness for the sky annulus
fd, photfile_name = tempfile.mkstemp(".mag.1")
utilities.if_exists_remove(photfile_name)
kwargs = dict(output=photfile_name, coords=coords_file, salgorithm='median',
wcsin='world', fwhm=seeing, gain=self.header.gaink, exposure=self.header.exptimek,
airmass=self.header.airmassk, annulus=annulus, dannulus=dannulus,
apertures=aperture, verbose="no", verify="no", interac="no")
iraf.phot(self.header.im_name, **kwargs)
[counts] = iraf.txdump(photfile_name, 'FLUX', 'yes', Stdout=subprocess.PIPE)
else:
sys.exit("\n \n Sorry, no aperture was passed by you, and a seeing keyword was not "
"found in the header. \n\n ")
utilities.if_exists_remove(coords_file)
return float(counts)
def doPhotometryACS(self, file, inputcoords, apertures, zeropoint, bgsigma,
skyann, skydann):
'''
This function can be used to do photometry from a given image. Input parameters
can be varied, however, the task assumes that photometry is done from an ACS
image and the exposure time is found from the header of the file.
Object recentering is done with centroid algorithm and shifts up to 6 pixels are
possible. For skyfitting algorithm mode is adopted.
'''
#load packages, should supress the output
I.digiphot()
I.apphot()
#setting up for ACS
I.datapar(sigma=bgsigma, exposure='exptime', gain='ccdgain')
I.centerpars(calgorithm='centroid', cbox=10., maxshift=6.)
I.fitskypars(salgorithm = 'mode', annulus = skyann, \
dannulus = skydann, skyvalue = 0.)
I.photpars(apertures=apertures, zmag=zeropoint)
I.phot(file, coords=inputcoords, verify='no', verbose='no')
def do_phot(fnlist,coofile,fwhmlist,skysiglist):
"""Runs the IRAF 'phot' routine on a series of images to determine their
centroid positions and magnitudes. It is very likely you don't want to call
this routine on its own, but rather have align_norm do it for you.
Inputs:
fnlist -> List of strings, each the path to a fits image
coofile -> Path to the file containing the coordinate list of stars
fwhmlist -> List of the PSF FWHM's for each image
skysiglist -> List of the sky background sigmas for each image
Outputs:
photlist -> List of strings, the paths to the photometry outputs
"""
iraf.noao(_doprint=0)
iraf.digiphot(_doprint=0)
iraf.apphot(_doprint=0)
photlist = []
for i in range(len(fnlist)):
print "Performing photometry on the stars in image "+fnlist[i]
photlist.append(fnlist[i]+".mag")
iraf.phot(image=fnlist[i],
skyfile="",
coords=coofile,
output=photlist[i],
interactive="N",
sigma=skysiglist[i],
datamin='INDEF',
datamax='INDEF',
calgorithm='centroid',
cbox=2*fwhmlist[i],
salgorithm='centroid',
annulus=4*fwhmlist[i],
dannulus=6*fwhmlist[i],
apertures=4*fwhmlist[i],
verify='N')
return photlist
def do_phot(image_file_name, catalog_file_name, output_mag_file_name,
sextractor_cfg_path, phot_params):
"""Calculates the photometry of the images.
Receives the image to use, a catalog with the position of the objects
contained in the image and the name of the output file.
Args:
image_file_name: Name of the file with the image.
catalog_file_name: File with the X, Y coordinates to do phot.
output_mag_file_name: Name of the output file with the magnitudes.
sextractor_cfg_path: Path to the sextractor configuration files.
phot_params: Parameters for phot.
"""
# If magnitude file exists, remove it to avoid error.
if os.path.exists(output_mag_file_name):
os.remove(output_mag_file_name)
logging.debug("Calculating magnitudes for: %s in %s" %
(image_file_name, output_mag_file_name))
# Calculate datamin for this image.
datamin = calculate_datamin(image_file_name, phot_params)
# Calculate FWHM for this image.
fwhm = astromatics.get_fwhm(sextractor_cfg_path, image_file_name)
# Set the parameters for the photometry that depends on the image.
set_image_specific_phot_pars(fwhm, phot_params)
try:
iraf.phot(image=image_file_name,
coords=catalog_file_name,
output=output_mag_file_name)
except iraf.IrafError as exc:
logging.error("Error executing phot on : %s" % (image_file_name))
logging.error("Iraf error is: %s" % (exc))
def phot(fn, outFn):
if os.path.isfile(outFn):
logger.debug("Skip, " + outFn + " exists!")
return
home = os.path.expanduser("~")
iraf.centerpars.setParam("cbox", 3)
iraf.centerpars.saveParList(filename= home + "/uparm/aptcentes.par")
iraf.fitskypars.setParam("annulus", 30)
iraf.fitskypars.setParam("dannulus", 5)
iraf.fitskypars.saveParList(filename= home + "/uparm/aptfitsks.par")
iraf.photpars.setParam("apertur", ', '.join(str(i) for i in range(3, 25, 2)))
iraf.photpars.setParam("zmag", 25)
iraf.photpars.saveParList(filename= home + "/uparm/aptphot.par")
cooFile = fn + ".coo"
iraf.phot(fn, coords = cooFile, output = outFn, interac = "no", verify = "no", Stdout=1, cbox=3,
exposur = "EXPTIME", airmass = "AIRMASS", filter = "DATE-OBS", #To keep it as a string
apertur = "3, 6, 9, 12, 15, 18, 21", annulus = 40, dannulus = 5, obstime = "")
def do_phot(image_file_name, catalog_file_name, output_mag_file_name,
sextractor_cfg_path, phot_params):
"""Calculates the photometry of the images.
Receives the image to use, a catalog with the position of the objects
contained in the image and the name of the output file.
Args:
image_file_name: Name of the file with the image.
catalog_file_name: File with the X, Y coordinates to do phot.
output_mag_file_name: Name of the output file with the magnitudes.
sextractor_cfg_path: Path to the sextractor configuration files.
phot_params: Parameters for phot.
"""
# If magnitude file exists, remove it to avoid error.
if os.path.exists(output_mag_file_name):
os.remove(output_mag_file_name)
logging.debug("Calculating magnitudes for: %s in %s" %
(image_file_name, output_mag_file_name))
# Calculate datamin for this image.
datamin = calculate_datamin(image_file_name, phot_params)
# Calculate FWHM for this image.
fwhm = astromatics.get_fwhm(sextractor_cfg_path, image_file_name)
# Set the parameters for the photometry that depends on the image.
set_image_specific_phot_pars(fwhm, phot_params)
try:
iraf.phot(image = image_file_name,
coords = catalog_file_name,
output = output_mag_file_name)
except iraf.IrafError as exc:
logging.error("Error executing phot on : %s" % (image_file_name))
logging.error( "Iraf error is: %s" % (exc))
def daofind(filelist):
iraf.datapars.setParam("exposure", "EXPTIME")
iraf.datapars.setParam("airmass", "AIRMASS")
iraf.datapars.setParam("filter", "INSFILTE")
iraf.datapars.setParam("ccdread", "RDNOISE")
iraf.datapars.setParam("gain", "GAIN")
iraf.centerpars.setParam("calgorithm", "centroid")
iraf.photpars.setParam("apertures", "17.56")
iraf.fitskypars.setParam("annulus", "20.56")
iraf.fitskypars.setParam("dannulus", "5")
with open(filelist) as file1:
for line in file1:
filename = line.strip()
print("Filename %s" % filename)
y, z = np.loadtxt(filename + "-daoedit",
usecols=[3, 4],
unpack=True)
sigma = np.mean(y)
fwhm = np.mean(z)
iraf.datapars.setParam("fwhmpsf", "%s" % str(fwhm))
iraf.datapars.setParam("sigma", "%s" % str(sigma))
iraf.daofind.setParam("mode", "h")
iraf.phot.setParam("mode", "h")
iraf.datapars.setParam("mode", "h")
iraf.centerpars.setParam("mode", "h")
iraf.fitskypars.setParam("mode", "h")
iraf.photpars.setParam("mode", "h")
iraf.daofind(filename, filename + "-daofind", mode='h')
iraf.phot(filename,
coords=(filename + "-daofind"),
output=(filename + ".mag"),
mode='h')
def psfphot(image,coords,pststars,refstar,centre=True,vary=False):
"""PSF photometry. Centering is through phot on refstar.
Assume coords is a .als file for now. Recentering is always done
for the reference star, never for the targets."""
iraf.dele('temp.mag*')
iraf.dele('temp.psf.fits')
iraf.dele('temp.als')
if centre:
xsh,ysh = recentre(image,refstar)
print "Fine Centring: ", xsh,ysh
else: xsh,ysh = 0,0
if vary:
setaperture(image,refstar)
shift_file_coords(coords,xsh,ysh,'tempcoords2',sort='als')
shift_file_coords(pststars,xsh,ysh,'temppst2',sort='pst')
iraf.phot(image,'tempcoords2','temp.mag2',inter="no",calgorithm='none',
mode='h',verify='no',update='no',verbose='no')
iraf.psf(image,'temp.mag2','temppst2','temp.psf','temp.mag.pst','temp.mag.psg',
inter='no',mode='h',verify='no',update='no',verbose='no')
iraf.allstar(image,'temp.mag2','temp.psf','temp.als','temp.mag.arj',"default",
mode='h',verify='no',update='no',verbose='no')
out = iraf.pdump('temp.als','id,mag,merr,msky','yes',Stdout=1)
return out
def getnoise(image, catalog): #sky-subtracted image
(ximage, yimage, isoarea, fluxerriso) = readcatalog(catalog)
(xpos, ypos) = getpositions(ximage, yimage, isoarea, image)
measurephot(xpos, ypos, image)
iraf.digiphot()
iraf.daophot()
iraf.phot('check.fits',
coords='noisecoords.dat',
output='noise.dat',
skyfile='sky',
salgori='file',
aperture='apertures',
interactive='no',
calgorith='none',
verify='no')
(aveap, aveaperr, avearea, aveareaerr) = calcavesky()
(a, b) = solveforab(aveaperr, avearea)
print "a,b", a, b
s = str(image)
(file, post) = s.split('.')
#plotnoisepylab(aveap,aveaperr,avearea,aveareaerr,a,b,file,isoarea,fluxerriso)
return a, b
def measurephot(xpos, ypos, image):
coords = open("noisecoords.dat", 'w')
for i in range(len(xpos)):
coords.write("%8.1f %8.1f \n" % (xpos[i], ypos[i]))
sky = open("sky", 'w')
for i in range(npoints):
sky.write("0.0 \n")
sky.close()
aps = open("apertures", 'w')
aps.write("1,2,3,4,5,6,7,8,9,10,11,12,13,14,15")
aps.close()
os.system("rm noise.dat")
iraf.digiphot()
iraf.daophot()
print image
image = "j-sky.fits"
image = "n-sky.fits"
iraf.digiphot.daophot.phot(image,
coords="noisecoords.dat",
output="noise.dat",
skyfile="sky",
salgori="file",
aperture="apertures",
interactive="no",
wcsin='logical')
iraf.apphot()
iraf.phot('check.fits',
coords='noisecoords.dat',
output='noise.dat',
skyfile='sky',
salgori='file',
aperture='apertures',
interactive='no')
test = raw_input("enter anything")
def p60photsub(ofile, inlis, refimage, refstars, ot, filter):
refstars.set_mag(filter)
coofile = open('ot.coo', 'w')
ot.wcs2pix(refimage)
coofile.write('%10.3f%10.3f\n' % (ot[0].xval, ot[0].yval))
coofile.close()
outfile = open(ofile, 'a+')
p60photutils.p60zeropt(inlis, refstars, filter)
subimage = iraffiles('@%s' % inlis)
for image in subimage:
root, ext = image.split('.')
iraf.phot('%s.sub' % root,
coo='ot.coo',
output='%s.grb' % root,
interac=no)
stars = Starlist('%s.mag' % root)
refstars.wcs2pix(image)
zp, zpu = stars.zeropt(refstars, method='mean', rejout=0)
otstars = Starlist('%s.grb' % root)
[mjd, utshut] = get_head(image, ['OBSMJD', 'UTSHUT'])
if (len(stars) > 0):
outfile.write('%s\t%s\t%.3f\t%.3f\t%.3f\t%.3f\n' %
(mjd, utshut, otstars[0].mag + zp,
sqrt(pow(zpu, 2) + pow(otstars[0].magu, 2)),
otstars[0].magu, zpu))
outfile.close()
import numpy as np
import astropy.io.fits as pyfits
from pyraf import iraf
from iraf import noao, digiphot, apphot, phot, txdump
import matplotlib
from matplotlib import pyplot as plt
iraf.noao.digiphot.apphot.phot.interac='no'
iraf.noao.digiphot.apphot.phot.centerp.calgori='none'
iraf.noao.digiphot.apphot.phot.fitskypars.salgori='constant'
iraf.noao.digiphot.apphot.phot.cache='yes'
iraf.noao.digiphot.apphot.phot.salgori='constant'
for band, aperture in zip(['f105w','f125w','f140w','f160w','f435w','f606w','f814w'], ['3.2','3.5','3.9','4.1','3.3','3.3','3.3']):
iraf.noao.digiphot.apphot.phot.photpar.apertur=aperture
iraf.phot(image='SEG_' + band + '_sex_hff_abells1063_par_CHECK.fits', interactive='no',calgorithm='none', salgori='constant',coords='box_coords_' + band + '.coo', output='PHOT_SEG_hff_abells1063_par_' + band + '.txt',verify='no')
iraf.txdump(textfile='PHOT_SEG_hff_abells1063_par_' + band + '.txt', fields='XCEN, YCEN, SUM', expr='yes', Stdout='PHOT_SEG_hff_abells1063_par_' + band + '_OUTFILE.txt')
def performPhotometry(task, logger):
#iraf.prcacheOff()
[iraf.unlearn(t) for t in ('phot','pstselect','psf','allstar')]
iraf.set(imtype="fits,noinherit") # set image output format
iraf.set(clobber="yes")
hdu=pyfits.open(task['images'])[0]
hdr = hdu.header
imdata = hdu.data
for key,value in task['fits'].iteritems():
task[key] = hdr.get(value,1)
#Sextractor to find stars; add an object for the force detect
logger.info('Running SExtractor on [%s]' % os.path.basename(task['images']))
sex = sextractor.SExtractor()
makeSexConfig(sex,task)
sex.run(task['images'])
catalog = sex.catalog()
#Set up image parameters
MIN_X = max(1,int(task['numpixx']*task['filtfactor']))
MIN_Y = max(1,int(task['numpixy']*task['filtfactor']))
MAX_X = int(task['numpixx']*(1-task['filtfactor']))
MAX_Y = int(task['numpixy']*(1-task['filtfactor']))
AREAXY = '[%s:%s,%s:%s]' % (MIN_X, MAX_X, MIN_Y, MAX_Y)
AREANO = '[%s:%s,%s:%s]' % (MIN_X, MAX_X-2*MIN_X, MIN_Y, MAX_Y-2*MIN_Y)
try:
task['pixscale'] = abs(hdr.get('CD1_1'))*3600.
except TypeError:
task['pixscale'] = abs(hdr.get('CDELT1'))*3600.
task['seeing'] = np.median( sorted([i['FWHM_IMAGE'] for i in catalog])[:int(-len(catalog)*0.5)] ) #Take the median of the "bottom" 50% of objects
logger.info('--> %s SExtractor detected bright objects in the field' % (len(catalog),) )
logger.info('--> %0.2f median FWHM of bright objects in the field, in arcsec' % (task['seeing']*task['pixscale'],))
task['objects'] = [(i['ALPHA_J2000'],i['DELTA_J2000']) for i in catalog]
task['objects'].append(task['objwcs'])
task['objectlist'] = open(os.path.join(task['output_directory'],'objectlist'),'w')
task['objectlist'].write('\n'.join([' %s %s' % (i[0],i[1]) for i in task['objects']]))
task['objectlist'].close()
logger.info('Running iraf.imstat')
irafoutput = iraf.imstat(images=task['images']+AREANO,fields='midpt,min,max,stddev', format=0, Stdout=1)
task['nimgs'] = hdr.get('NIMGS',1)
task['gain'] *= task['nimgs']*2/3.
task['ron'] *= np.sqrt(task['nimgs'])/task['nimgs']*constants.INTERPSM[task['band']]
task['datamean'], task['datamin'], task['datamax'], task['datastdev'] = map(float, irafoutput[0].split())
irafoutput = iraf.imstat(images=task['images'],fields='stddev,midpt',nclip=25,format=0,cache='yes',Stdout=1)
task['skynoise'], task['datamean'] = map(float, irafoutput[0].split() )
task['skynoise'] *= constants.INTERPSM[task['band']]
task['airmass'] = hdr.get('AIRMASS',1)
task['zmag'] -= (float(task['airmass'])-1.0)*constants.extinction_coefficients[task['band']]
task['match_proximity'] = 2.5 * task['seeing']
logger.info('--> %5.2f counts: Sky noise, corrected for drizzle imcombine' % task['skynoise'])
logger.info('--> %5.2f Median count value, after background subtraction' % task['datamean'])
logger.info('--> %5.2f Airmass' % task['airmass'])
#prepare temp files that iraf will use
for filename in ('photfile','pstfile','psfimg','opstfile','groupfile','allstarfile','rejfile','subimage'):
task[filename] = open(os.path.join(task['output_directory'],filename),'w')
task[filename].close()
#iraf.phot to get APP magnitudes
logger.info('Running iraf.apphot.phot')
#apsizes = [i*task['faperture']*task['seeing'] for i in (0.4,0.5,0.6,0.8,1.0,1.2,1.5,2.0,2.5,3.0)]
#irafapsizes = ','.join(['%.2f' % i for i in apsizes])
irafapsizes = '%0.2f' % (task['faperture']*task['seeing'])
kwargs = dict(image=task['images'],coords=task['objectlist'].name,
output=task['photfile'].name,
interac='no',scale=1,
fwhmpsf=task['seeing'],
wcsin='world', wcsout='physical',
sigma=task['skynoise'],
datamin=task['datamin'],
datamax=task['datamax'],
readnoi=task['ron'],
epadu=task['gain'],
itime=task['exposure'],
xairmass=task['airmass'],
ifilter=task['band'],
otime=task['dateobs'],
aperture= irafapsizes,
zmag=task['zmag'],
annulus=task['fannulus']*task['seeing'],
dannulus=task['fdannulus']*task['seeing'],
calgorithm='gauss',
cbox = 1.5*task['seeing'],
maxshift=2.0*task['seeing'],
mode="h",Stdout=1,verify=0)
iraf.phot(**kwargs)
if task['band'] not in constants.infrared:
#iraf.pstselect to choose objects for PSF modelling
logger.info('Running iraf.daophot.pstselect')
kwargs = dict(image=task['images'],
photfile=task['photfile'].name,pstfile=task['pstfile'].name,
maxnpsf=task['pstnumber'],
wcsin='physical',
wcsout='physical',
interac="no",verify='no',scale=1,
fwhmpsf=task['seeing'],
datamin=0,
datamax=task['datamax'],
psfrad=3.0*task['seeing'],
fitrad=1.0*task['seeing'],
recente='yes',
nclean=task['nclean'],
mode="h",Stdout=1)
iraf.pstselect(**kwargs)
#iraf.psf to model PSF
logger.info('Running iraf.daophot.psf')
kwargs = dict( image=task['images'],
photfile=task['photfile'].name,
pstfile=task['pstfile'].name,
psfimage=task['psfimg'].name,
opstfile=task['opstfile'].name,
groupfile=task['groupfile'].name,
wcsin='physical',wcsout='physical',
interac="no",verify="no",scale=1,
fwhmpsf=task['seeing'],
sigma=task['skynoise'],
datamin=task['datamin'],
datamax=task['datamax'],
readnoi=task['ron'],
epadu=task['gain'],
itime=task['exposure'],
xairmass=task['airmass'],
ifilter=task['band'],
otime=task['dateobs'],
function=task['func'],
varorder=task['varorder'],
saturat='no',
psfrad=3.0*task['seeing'],
fitrad=1.*task['faperture']*task['seeing'],
nclean=task['nclean'],
mergerad=1.5*task['seeing'],
mode='h',Stdout=1)
iraf.psf(**kwargs)
logger.info('Running iraf.daophot.allstar')
#iraf.allstars to compute PSF photometry; recenter with recenter='yes', mergerad=<value> to avoid duplicate detection
kwargs = dict(image=task['images'],
photfile=task['photfile'].name,
wcsin='physical',
wcsout='physical',
psfimage=task['psfimg'].name,
allstarf=task['allstarfile'].name,
rejfile=task['rejfile'].name,
subimage=task['subimage'].name,
verbose=1,verify='no',scale=1,
fwhmpsf=task['seeing'],
sigma=task['skynoise'],
datamin=task['datamin'],
datamax=task['datamax'],
readnoi=task['ron'],
epadu=task['gain'],
itime=task['exposure'],
xairmass=task['airmass'],
ifilter=task['band'],
otime=task['dateobs'],
function=task['func'],
varorder=task['varorder'],
psfrad=3.*task['seeing'],
fitrad=1.*task['faperture']*task['seeing'],
recenter='yes',
mergerad=1.5*task['seeing'],
mode='h',Stdout=1)
iraf.allstar(**kwargs)
#Parse both photometry, convert to RA,DEC,MAG,MAGERR
logger.info('iraf tasks complete. Parsing results and calibrating')
photometry = {}
photometry['APP'] = iraf.txdump(textfiles=task['photfile'].name,
fields='XCENTER,YCENTER,MAG,MERR',expr='yes',
headers='no',Stdout=1)
if task['band'] not in constants.infrared:
photometry['PSF'] = iraf.txdump(textfiles=task['allstarfile'].name,
fields='XCENTER,YCENTER,MAG,MERR',expr='yes',
headers='no',Stdout=1)
for phototype in photometry:
kwargs = dict(input='STDIN',
output='STDOUT',
insystem='%s physical' % task['images'],
outsystem='%s world' % task['images'],
ilatuni='physical',
ilnguni='physical',
olnguni='degrees',
olatuni='degrees',
ilngfor='%10.7f',
ilatfor='%10.7f',
olngfor='%10.5f',
olatfor='%10.5f',
Stdin=photometry[phototype],Stdout=1)
photometry[phototype] = [i.split() for i in iraf.skyctran(**kwargs) if i and not i.startswith('#') and 'INDEF' not in i]
photometry[phototype] = [map(float,(i[4],i[5],i[2],i[3])) for i in photometry[phototype] ] #Now we have [(ra,dec,'mag','mageerr'),...]
results = calibrate((task['objwcs'][0],task['objwcs'][1]),task,photometry,logger)
# if 'PSF' not in results:
return results
def measurephottest(inimage):
if os.path.exists('noise.dat'):
os.remove('noise.dat')
iraf.phot(image=inimage,coords="noisecoords.dat",output="noise.dat",calgorith='none',skyfile="sky",salgori="file",aperture="apertures",interactive="no",verify='no',verbose='yes')
def continuumReduce(imageName):
#Read the fwhm from the Ha image file
imageHeader = fits.open(imageName + ".fits")[0]
fwhm = imageHeader.header['SEEING']
annul = 5.0 * fwhm
aper = 3.0 * fwhm
#Configure 'datapars', 'findpars', 'phot' and 'daofind'
iraf.datapars.datamax = 150000
iraf.centerpars.calgorithm = "centroid"
iraf.centerpars.cbox = 16
iraf.centerpars.maxshift = 3
iraf.fitskypars.salgorithm = "mode"
iraf.fitskypars.annulus = annul
iraf.fitskypars.dannulus = 10
iraf.photpars.apertures = aper
iraf.phot.verify = 'no'
iraf.phot.verbose = 'no'
iraf.phot.verbose = 'no'
#Delete old photometry and old Ha images
for f in ('mag_Ha', 'psel_Ha', "Hacs_final.fits", "Hacs_finalplus.fits",
"Hacs_finalminus.fits", imageName + "_scaledminus.fits",
imageName + "_scaledplus.fits", imageName + "_scaled.fits"):
silentDelete(f)
#Call 'phot' to get the data of the stars from the aligned Ha image
iraf.phot("Ha_final.fits", 'pdump.file', 'mag_Ha')
#Pick out only the required data of stars from the .25 file
sys.stdout = open("pdump_Ha.file", "w")
iraf.pdump("mag_Ha", "xcenter,ycenter,flux", "yes")
sys.stdout = sys.__stdout__
print("The Ha coordinates and flux are stored in pdump_Ha.file")
#Read the data from the pdump files
r_Data = open('pdump.file')
r_DataList = r_Data.readlines()
r_Data.close()
Ha_Data = open('pdump_Ha.file')
Ha_DataList = Ha_Data.readlines()
Ha_Data.close()
#Compute the average scale factor between the R and Ha images
scaleFactors = []
print('Scale factors: ')
for index in range(0, len(r_DataList)):
rLine = r_DataList[index].split(' ')
rFlux = float(rLine[2])
haLine = Ha_DataList[index].split(' ')
haFlux = float(haLine[2])
scaleFactor = haFlux / rFlux
print(str(scaleFactor))
scaleFactors.append(scaleFactor)
print(" ")
scaleFactors = np.array(scaleFactors)
#Compute the avg scale factor and standard deviation and ask if it is acceptable, changing the value if it is not.
avgScaleFactor = np.mean(scaleFactors)
stDev = np.std(scaleFactors)
print("The scale factor is " + str(avgScaleFactor))
decision = raw_input('Is this acceptable (y/n)? ')
avgChanged = False
if (not ((decision == 'yes') or (decision == 'y'))):
avgScaleFactor = float(raw_input('Enter a new scalefactor: '))
avgChanged = True
print("Average scale factor is now: " + str(avgScaleFactor))
#configure hedit
iraf.hedit.add = 'yes'
iraf.hedit.verify = 'no'
if (avgChanged):
#No adjustment
iraf.imarith('R_final', "*", avgScaleFactor, imageName + "_scaled")
iraf.imarith('Ha_final', "-", imageName + "_scaled", "Hacs_final")
iraf.hedit("Hacs_final", 'Rscale', avgScaleFactor)
#plus .01
iraf.imarith('R_final', "*", avgScaleFactor + .01,
imageName + "_scaledplus")
iraf.imarith('Ha_final', "-", imageName + "_scaledplus",
"Hacs_finalplus")
iraf.hedit("Hacs_finalplus", 'Rscale', avgScaleFactor + .01)
#minus .01
iraf.imarith('R_final', "*", avgScaleFactor - .01,
imageName + "_scaledminus")
iraf.imarith('Ha_final', "-", imageName + "_scaledminus",
"Hacs_finalminus")
iraf.hedit("Hacs_finalminus", 'Rscale', avgScaleFactor - .01)
else:
#No stdev adjustment
iraf.imarith('R_final', "*", avgScaleFactor, imageName + "_scaled")
iraf.imarith('Ha_final', "-", imageName + "_scaled", "Hacs_final")
iraf.hedit("Hacs_final", 'Rscale', avgScaleFactor)
#plus one stdev
iraf.imarith('R_final', "*", avgScaleFactor + stDev,
imageName + "_scaledplus")
iraf.imarith('Ha_final', "-", imageName + "_scaledplus",
"Hacs_finalplus")
iraf.hedit("Hacs_finalplus", 'Rscale', avgScaleFactor + stDev)
#minus one stdev
iraf.imarith('R_final', "*", avgScaleFactor - stDev,
imageName + "_scaledminus")
iraf.imarith('Ha_final', "-", imageName + "_scaledminus",
"Hacs_finalminus")
iraf.hedit("Hacs_finalminus", 'Rscale', avgScaleFactor - stDev)
#clear up superfluous images
for f in (imageName + "_scaledminus.fits", imageName + "_scaledplus.fits",
imageName + "_scaled.fits", 'rIn.fits', 'haIn.fits'):
silentDelete(f)
print(
'The continuum subtracted images are Hacs_final.fits, Hacs_finalminus.fits, and Hacs_finalplus.fits'
)
def execute():
#here we define the coords variable as a list
coords=[]
#indenting matters in python. Everything
#indented under the for loop is inside the loop
#pdb.set_trace() # break point for python debugger
for line in open(coofnamein):
if (line.startswith("#") or line.startswith("z1")):
continue
#this skips the lines that start with a #
line=map(float,line.split())
#this takes the line and splits it into a list of floats
if len(line) != 4:
continue
#skips the lines that don't have 4 floats
coords.append((line[0],line[1]))
#adds the most recent coords (the 0th and 1st elements
# to the list of coordinates
#print coords
coofnameout1=open(coofnameout, "w")
for ci in coords:
coofnameout1.write("%.4g\t%.4g\n" % ci)
#the strange syntax is the formatting for the
#output. It prints each coordinate with 4 decimal places
# a tab in between, and then a new line at the end
coofnameout1.close()
#sys.exit(1)
l=os.listdir(image_dir)
l=[li for li in l if li.endswith(endstr)]
l=[li for li in l if li.startswith(rootstr)]
l =[image_dir + li for li in l]
#this list takes all the files in the directory,
#then only keeps those with the correct beginning and ending
#l = l[:10]
#this line can tell the code to only run on the first 10 images
#useful for debugging
lc_out1 = open(lc_out,"w")
for li in l:
print li
#print coofnameout
#print phot_out
iraf.phot(li,coofnameout, phot_out, plotfile="", datapars="", centerpars="", fitskypars="", photpars="",interactive="no", radplots="no", icommands="", gcommands="", verify="no", weighting="constant", calgorithm="centroid", obstime=obstime, annulus=annulus,dannulus=dannulus,skyvalue=skyvalue,fwhmpsf=fwhmpsf,sigma=sigma)
#this actually does the photometry
#note all of the parameters that must be defined
standard_output = sys.stdout
#saves the current output -ie to the screen
txdumpfile = open(txdumpout, 'w')
sys.stdout = txdumpfile
#directs the output to the txdumpfile
iraf.txdump(phot_out, "otime,mag,merr", "yes", headers="no", parameters="no")
#does the txdump - might you want to output other information?
sys.stdout = standard_output # restores the stdout
txdumpfile.close() # close the file
os.remove(phot_out)
#deletes the file
phots =[]
for line in open(txdumpout):
#line=map(string,line.split())
line=str.split(line)
phots.append((line[1],line[2]))
#print phots
#print line[0]
#lc_out1.write(line[0] + "\t")
#print stringtohours(line[0])
lc_out1.write( "%10.7f \t" % (stringtohours(line[0])))
for photsi in phots:
lc_out1.write(photsi[0] + "\t")
lc_out1.write(photsi[1] + "\t")
lc_out1.write("\n")
os.remove(txdumpout)
iraf.fitskypars.skyvalu = bg
iraf.fitskypars.annulus = 4 * fwhm
iraf.fitskypars.dannulus = 3 * fwhm
iraf.photpars.aperture = max(3, fwhm)
iraf.photpars.zmag = zmag
iraf.daopars.fitrad = fwhm # Fitting radius in scale units. Only pixels within the fitting radius of the center of a star will contribute to
# the fits computed by the PEAK, NSTAR and ALLSTAR tasks.
##### Get Coordiates and Magnitudes Stars #################
# Run DAOFIND to get coordinates and PHOT to get magnitudes
###########################################################
iraf.daofind(fn, fn[:-5] + '.coo.1', verify='no',
verbose='no') # generate coo.1 file
iraf.phot(fn,
fn[:-5] + '.coo.1',
fn[:-5] + '.mag.1',
skyfile='bkg_' + fn,
verify='no',
verbose='no') # generate mag.1 file
##### MAKE PSF STAR LIST FILE 'pst.1' #######
# read coordinates and magnitudes of the stars selected based
# on the catalog generated by Source Extractor and make
# 'pst.1' file to use for running PSF task
#######################################################
coo1 = ascii.read(fn[:-5] + '.coo.1')
mag1 = ascii.read(fn[:-5] + '.mag.1')
coo1.sort('ID')
mag1.sort('ID')
pst1 = Table(names=('ID', 'XCENTER', 'YCENTER', 'MAG', 'MSKY'),
dtype=('i4', 'f8', 'f8', 'f8', 'f8'))
for i in range(min(num_psf_stars, len(stars))):
def run(imfile,
coordlist,
WCS=False,
outroot=None,
poisson=True,
verbose=True,
debug=False,
abmags=False,
decliner=False,
smallskyann=False,
calgorithm='gauss',
upperlim=None,
snanadat=False,
cbox=5.0):
"""
Use iraf.digiphot.apphot to collect aperture photometry in Vega magnitudes.
Required Arguments:
imfile (str): fits image file name (cannot be fpacked)
coord : the coordinate list for photometry
as a str, this is the name of a text file in two columns giving x,y coordinates.
as a python list or numpy array, this gives coordinate pairs for each target
e.g. coord=[ [1024,440], [502,680] ]
Optional arguments:
WCS : If input coordinates are in RA and DEC (degrees), user must set WCS=True.
outroot : root of the output file names (outroot.mag, outroot.full, outroot.out)
if unspecified, the root of imfile is used.
poisson: Use a poisson noise model or not. If set to false, a constant noise model is
used. Default is True
calgorithm: Centering algorithm to pass to iraf.apphot. Choices are "gauss","centroid",
"none", or "ofilter". Default is "gauss"
cbox: Size of centering box to pass to iraf.apphot. Default is 5.0
upperlim: None = when flux<3-sigma then report 3-sig upper limit
True = force computation of 3-sigma upper limit
False = disallow upper limits (i.e. always report measured flux)
snanadat: True = Report the mjd, flux and mag in a SNANA-style OBS: line
False = report the filename, mjd, source position, mag and errors.
verbose: Default is True.
debug: Start pdb. Default is False.
Output products : phot.out, phot.mag, phot.full
phot.out : the raw output from apphot
phot.full : a detailed photometry file
phot.mag : header+one line summary output file :
#image name, filter, xpos, ypos, magnitude, and errors
Requires : numpy, pyfits (astLib is required if WCS=True)
"""
if debug:
import pdb
pdb.set_trace()
from math import sqrt
from numpy import nan, log10
from pyraf import iraf
iraf.noao(_doprint=0)
iraf.digiphot(_doprint=0)
iraf.apphot(_doprint=0)
if outroot == None: outroot = os.path.splitext(os.path.basename(imfile))[0]
# Get info from header
hdr = pyfits.getheader(imfile)
exptime = hdr['EXPTIME']
if 'EXPSTART' in hdr:
mjdobs = "%.1f" % hdr['EXPSTART']
else:
mjdobs = '0.0'
if 'DATE-OBS' in hdr:
dateobs = hdr['DATE-OBS']
elif 'DATE' in hdr:
dateobs = hdr['DATE']
else:
dateobs = 'unknown'
if 'D001OUUN' in hdr:
if hdr['D001OUUN'].upper() == 'CPS':
gain = exptime
exptime = 1.0
elif hdr['D001OUUN'].upper() == 'COUNTS':
gain = 1.0
elif hdr['BUNIT'].upper() == 'ELECTRONS/S':
gain = exptime
exptime = 1.0
elif hdr['BUNIT'].upper() == 'ELECTRONS':
gain = 1.0
else:
print 'Problem determining units, check image'
return
if 'FILTER' in hdr:
filt = hdr['FILTER']
elif 'FILTER1' in hdr:
filt = hdr['FILTER1']
if filt.startswith('CLEAR'):
filt = hdr['FILTER2']
instrument = hdr['INSTRUME']
if instrument == 'WFC3':
instrument = instrument + '_' + hdr['DETECTOR']
if abmags:
if instrument == 'WFC3_IR':
ZPT = ZPT_WFC3_IR_AB[filt]
elif instrument == 'WFC3_UVIS':
ZPT = ZPT_WFC3_UVIS_AB[filt]
elif instrument == 'ACS':
ZPT = ZPT_ACS_AB[filt]
else:
print "Can't handle instrument: %s; check the fits header." % instrument
#Give up and die
return
else:
if instrument == 'WFC3_IR':
ZPT = ZPT_WFC3_IR_VEGA[filt]
elif instrument == 'WFC3_UVIS':
ZPT = ZPT_WFC3_UVIS_VEGA[filt]
elif instrument == 'ACS':
ZPT = ZPT_ACS_VEGA[filt]
else:
print "Can't handle instrument: %s; check the fits header." % instrument
#Give up and die
return
# format for coord list:
# coordlist= [ [x0,y0], [x1,y1], ... ]
# or a two-column text file
if type(coordlist) == str:
# user provided name of a coordinate file
fin = open(coordlist, 'r')
coordlines = fin.readlines()
fin.close()
coordvals = array([cline.split() for cline in coordlines], dtype=float)
elif len(shape(coordlist)) == 1:
# user provided something like coord=[x,y]
coordvals = array([coordlist])
else:
# user provided something like coord= [[x1,y1],[x2,y2],[x3,y3]]
coordvals = array(coordlist)
# how many objects do we have ?
numcoo = len(coordvals)
if WCS:
# If coords in wcs instead of x,y,
# get wcs information from imfile for converting to xy.
from astLib import astWCS
wcsfits = astWCS.WCS(imfile)
# (re)write a list of x,y positions
coxyfile = '%s.xycoo' % outroot
coxy = open(coxyfile, 'w')
for coord in coordvals:
if WCS:
#Convert from RA and Dec to xy
# NOTE: wcsfits returns values based on a 0,0 origin, but the iraf phot
# packages expect a 1,1 origin. So we add 1 to each value
xy = wcsfits.wcs2pix(coord[0], coord[1])
xy[0] += 1
xy[1] += 1
else:
xy = coord
print >> coxy, "%10.2f %10.2f" % (float(xy[0]), float(xy[1]))
coxy.close()
if verbose > 1: print("XY coords written to %s" % coxyfile)
""" iraf.digiphot.apphot.datapars :
2013.09.06 SR: updated to use Poisson noise model (which includes sky noise) as
the default, instead of 'constant' """
iraf.unlearn(iraf.apphot.phot)
iraf.unlearn(iraf.datapars)
iraf.datapars.scale = 1.0
iraf.datapars.fwhmpsf = psffwhm[instrument]
iraf.datapars.emission = not decliner
iraf.datapars.sigma = 'INDEF'
iraf.datapars.datamin = 'INDEF'
iraf.datapars.datamax = 'INDEF'
if poisson:
iraf.datapars.noise = 'poisson'
else:
iraf.datapars.noise = 'constant'
iraf.datapars.ccdread = ''
#iraf.datapars.gain = ''
iraf.datapars.readnoise = 0.0
#iraf.datapars.exposure = ' '
#iraf.datapars.airmass = ''
#iraf.datapars.obstime = ''
iraf.datapars.itime = exptime
iraf.datapars.epadu = gain
iraf.datapars.xairmass = 'INDEF'
iraf.datapars.ifilter = 'INDEF'
iraf.datapars.otime = 'INDEF'
# iraf.digiphot.apphot.centerpars :
iraf.unlearn(iraf.centerpars)
iraf.centerpars.calgorithm = calgorithm
iraf.centerpars.cbox = cbox
iraf.centerpars.cthreshold = 0.0
iraf.centerpars.minsnratio = 1.0
iraf.centerpars.cmaxiter = 10.0
iraf.centerpars.maxshift = 1.0
iraf.centerpars.clean = False
iraf.centerpars.rclean = 1.0
iraf.centerpars.rclip = 2.0
iraf.centerpars.kclean = 3.0
iraf.centerpars.mkcenter = False
# iraf.digiphot.apphot.fitskypars :
iraf.unlearn(iraf.fitskypars)
iraf.fitskypars.salgorithm = 'median'
if smallskyann:
iraf.fitskypars.annulus = 8.0
iraf.fitskypars.dannulus = 12.0
else:
iraf.fitskypars.annulus = 25.0
iraf.fitskypars.dannulus = 40.0
iraf.fitskypars.skyvalue = 0.0
iraf.fitskypars.smaxiter = 10.0
iraf.fitskypars.sloclip = 0.0
iraf.fitskypars.shiclip = 0.0
iraf.fitskypars.snreject = 50.0
iraf.fitskypars.sloreject = 3.0
iraf.fitskypars.shireject = 3.0
iraf.fitskypars.khist = 3.0
iraf.fitskypars.binsize = 0.1
iraf.fitskypars.smooth = False
iraf.fitskypars.rgrow = 0.0
iraf.fitskypars.mksky = False
# iraf.digiphot.apphot.photpars :
iraf.unlearn(iraf.photpars)
iraf.photpars.weighting = 'constant'
iraf.photpars.apertures = APLIST
iraf.photpars.zmag = ZPT
iraf.photpars.mkapert = False
photparams = {
'interac': False,
'radplot': False,
}
magfile_out = outroot + '.out'
magfile_full = outroot + '.full'
magfile_phot = outroot + '.mag'
if os.path.exists(magfile_out):
os.remove(magfile_out)
# run photometry using the newly created coxyfile for providing input coordinates
try:
iraf.phot(image=imfile,
skyfile='',
coords=coxyfile,
output=magfile_out,
verify=False,
verbose=True,
Stdout=1,
**photparams)
except iraf.IrafError, e:
print("phot failed on %s with IRAF error :\n%s" % (imfile, e))
if os.access('zeropoint.used',os.R_OK):
f=file('zeropoint.used')
zmag=float(f.read())
if os.access(opt.output,os.R_OK):
os.unlink(opt.output)
iraf.photpars.apertures=int(opt.aperture)
iraf.photpars.zmag=zmag
iraf.datapars.datamin=0
iraf.datapars.datamax=maxlin
iraf.datapars.exposur="EXPTIME"
iraf.fitskypars.annulus=int(opt.aperture)+5
iraf.fitskypars.dannulus=5
iraf.centerpars.calgori="centroid"
iraf.centerpars.cbox=5.
iraf.centerpars.cthreshold=0.
iraf.centerpars.maxshift=2.
iraf.centerpars.clean='no'
iraf.phot.update='no'
iraf.phot.verbose='no'
iraf.phot.verify='no'
iraf.phot.interactive='no'
import tempfile
magfile=tempfile.mktemp(suffix='mag')
print(magfile)
iraf.phot(opt.image, opt.input, magfile)
iraf.pdump(magfile,"XCENTER,YCENTER,MAG,MERR,ID","MERR < 0.1 && MAG != INDEF && PIER==0", header='no', parameters='yes', Stdout=opt.output)
os.unlink(magfile)
def phot(fits_filename,
x_in,
y_in,
aperture=15,
sky=20,
swidth=10,
apcor=0.3,
maxcount=30000.0,
exptime=1.0,
zmag=None,
extno=0,
centroid=True):
"""
Compute the centroids and magnitudes of a bunch sources on fits image.
:rtype : astropy.table.Table
:param fits_filename: Name of fits image to measure source photometry on.
:type fits_filename: str
:param x_in: x location of source to measure
:type x_in: float, numpy.array
:param y_in: y location of source to measure
:type y_in: float, numpy.array
:param aperture: radius of circular aperture to use.
:type aperture: float
:param sky: radius of inner sky annulus
:type sky: float
:param swidth: width of the sky annulus
:type swidth: float
:param apcor: Aperture correction to take aperture flux to full flux.
:type apcor: float
:param maxcount: maximum linearity in the image.
:type maxcount: float
:param exptime: exposure time, relative to zmag supplied
:type exptime: float
:param zmag: zeropoint magnitude
:param extno: extension of fits_filename the x/y location refers to.
"""
if not hasattr(x_in, '__iter__'):
x_in = [
x_in,
]
if not hasattr(y_in, '__iter__'):
y_in = [
y_in,
]
if (not os.path.exists(fits_filename)
and not fits_filename.endswith(".fits")):
# For convenience, see if we just forgot to provide the extension
fits_filename += ".fits"
try:
input_hdulist = fits.open(fits_filename)
except Exception as err:
logger.debug(str(err))
raise TaskError("Failed to open input image: %s" % err.message)
# get the filter for this image
filter_name = input_hdulist[extno].header.get('FILTER', 'DEFAULT')
# Some nominal CFHT zeropoints that might be useful
zeropoints = {
"I": 25.77,
"R": 26.07,
"V": 26.07,
"B": 25.92,
"DEFAULT": 26.0,
"g.MP9401": 32.0,
'r.MP9601': 31.9,
'gri.MP9603': 33.520
}
if zmag is None:
logger.warning(
"No zmag supplied to daophot, looking for header or default values."
)
zmag = input_hdulist[extno].header.get('PHOTZP',
zeropoints[filter_name])
logger.warning("Setting zmag to: {}".format(zmag))
# check for magic 'zeropoint.used' files
for zpu_file in [
"{}.zeropoint.used".format(os.path.splitext(fits_filename)[0]),
"zeropoint.used"
]:
if os.access(zpu_file, os.R_OK):
with open(zpu_file) as zpu_fh:
zmag = float(zpu_fh.read())
logger.warning("Using file {} to set zmag to: {}".format(
zpu_file, zmag))
break
photzp = input_hdulist[extno].header.get(
'PHOTZP', zeropoints.get(filter_name, zeropoints["DEFAULT"]))
if zmag != photzp:
logger.warning(
("zmag sent to daophot: ({}) "
"doesn't match PHOTZP value in image header: ({})".format(
zmag, photzp)))
# setup IRAF to do the magnitude/centroid measurements
iraf.set(uparm="./")
iraf.digiphot()
iraf.apphot()
iraf.daophot(_doprint=0)
iraf.photpars.apertures = aperture
iraf.photpars.zmag = zmag
iraf.datapars.datamin = 0
iraf.datapars.datamax = maxcount
iraf.datapars.exposur = ""
iraf.datapars.itime = exptime
iraf.fitskypars.annulus = sky
iraf.fitskypars.dannulus = swidth
iraf.fitskypars.salgorithm = "mode"
iraf.fitskypars.sloclip = 5.0
iraf.fitskypars.shiclip = 5.0
if centroid:
iraf.centerpars.calgori = "centroid"
iraf.centerpars.cbox = 5.
iraf.centerpars.cthreshold = 0.
iraf.centerpars.maxshift = 2.
iraf.centerpars.clean = 'no'
else:
iraf.centerpars.calgori = "none"
iraf.phot.update = 'no'
iraf.phot.verbose = 'no'
iraf.phot.verify = 'no'
iraf.phot.interactive = 'no'
# Used for passing the input coordinates
coofile = tempfile.NamedTemporaryFile(suffix=".coo", delete=False)
for i in range(len(x_in)):
coofile.write("%f %f \n" % (x_in[i], y_in[i]))
coofile.flush()
# Used for receiving the results of the task
# mag_fd, mag_path = tempfile.mkstemp(suffix=".mag")
magfile = tempfile.NamedTemporaryFile(suffix=".mag", delete=False)
# Close the temp files before sending to IRAF due to docstring:
# "Whether the target_name can be used to open the file a second time, while
# the named temporary file is still open, varies across platforms"
coofile.close()
magfile.close()
os.remove(magfile.name)
iraf.phot(fits_filename + "[{}]".format(extno), coofile.name, magfile.name)
pdump_out = ascii.read(magfile.name, format='daophot')
logging.debug("PHOT FILE:\n" + str(pdump_out))
if not len(pdump_out) > 0:
mag_content = open(magfile.name).read()
raise TaskError("photometry failed. {}".format(mag_content))
# apply the aperture correction
pdump_out['MAG'] -= apcor
# if pdump_out['PIER'][0] != 0 or pdump_out['SIER'][0] != 0 or pdump_out['CIER'][0] != 0:
# raise ValueError("Photometry failed:\n {}".format(pdump_out))
# Clean up temporary files generated by IRAF
os.remove(coofile.name)
os.remove(magfile.name)
logger.debug("Computed aperture photometry on {} objects in {}".format(
len(pdump_out), fits_filename))
del input_hdulist
return pdump_out
def psffit(img, fwhm, psfstars, hdr, interactive, _datamax, psffun='gauss', fixaperture=False):
'''
giving an image, a psffile compute the psf using the file _psf.coo
'''
import lsc
_ron = lsc.util.readkey3(hdr, 'ron')
_gain = lsc.util.readkey3(hdr, 'gain')
if not _ron:
_ron = 1
print 'warning ron not defined'
if not _gain:
_gain = 1
print 'warning ron not defined'
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
zmag = 0.
varord = 0 # -1 analitic 0 - numeric
if fixaperture:
print 'use fix aperture 5 8 10'
hdr = lsc.util.readhdr(img+'.fits')
_pixelscale = lsc.util.readkey3(hdr, 'PIXSCALE')
a1, a2, a3, a4, = float(5. / _pixelscale), float(5. / _pixelscale), float(8. / _pixelscale), float(
10. / _pixelscale)
else:
a1, a2, a3, a4, = int(fwhm + 0.5), int(fwhm * 2 + 0.5), int(fwhm * 3 + 0.5), int(fwhm * 4 + 0.5)
iraf.fitskypars.annulus = a4
iraf.fitskypars.salgori = 'mean' #mode,mean,gaussian
iraf.photpars.apertures = '%d,%d,%d' % (a2, a3, a4)
iraf.datapars.datamin = -100
iraf.datapars.datamax = _datamax
iraf.datapars.readnoise = _ron
iraf.datapars.epadu = _gain
iraf.datapars.exposure = 'EXPTIME'
iraf.datapars.airmass = ''
iraf.datapars.filter = ''
iraf.centerpars.calgori = 'centroid'
iraf.centerpars.cbox = a2
iraf.daopars.recenter = 'yes'
iraf.photpars.zmag = zmag
iraf.delete('_psf.ma*,' + img + '.psf.fit?,_psf.ps*,_psf.gr?,_psf.n*,_psf.sub.fit?', verify=False)
iraf.phot(img+'[0]', '_psf.coo', '_psf.mag', interac=False, verify=False, verbose=False)
# removes saturated stars from the list (IRAF just issues a warning)
with open('_psf.mag') as f:
text = f.read()
text = re.sub('(.*\n){6}.*BadPixels\* \n', '', text)
with open('_psf.mag', 'w') as f:
f.write(text)
iraf.daopars.psfrad = a4
iraf.daopars.functio = psffun
iraf.daopars.fitrad = a1
iraf.daopars.fitsky = 'yes'
iraf.daopars.sannulus = a4
iraf.daopars.recenter = 'yes'
iraf.daopars.varorder = varord
if interactive: # not possible to run pstselect or psf interactively on 64-bit linux (Error 851)
shutil.copyfile('_psf.mag', '_psf.pst')
print '_' * 80
print '>>> Mark good stars with "a" or "d"-elete. Then "f"-it,' + \
' "w"-write and "q"-uit (cursor on ds9)'
print '-' * 80
else:
iraf.pstselect(img+'[0]', '_psf.mag', '_psf.pst', psfstars, interac=False, verify=False)
iraf.psf(img + '[0]', '_psf.mag', '_psf.pst', img + '.psf', '_psf.psto', '_psf.psg', interac=interactive,
verify=False, verbose=False)
iraf.group(img + '[0]', '_psf.mag', img + '.psf', '_psf.grp', verify=False, verbose=False)
iraf.nstar(img + '[0]', '_psf.grp', img + '.psf', '_psf.nst', '_psf.nrj', verify=False, verbose=False)
photmag = iraf.txdump("_psf.mag", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
pst = iraf.txdump("_psf.pst", 'xcenter,ycenter,id', expr='yes', Stdout=1)
fitmag = iraf.txdump("_psf.nst", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
return photmag, pst, fitmag
def runApperturePhotometryOnObject(self, photObject, write=False):
# Aperture sizes
#fap = 1.0
#fdan = 2.0
#fan = 3.0
# To take photometry of a given object using DAOPHOT/APPHOT.PHOT
# Check we have an object list
coordfilename = self._Name.replace(".fits", "objectID_%s.coo" % photObject._id)
coordfilename2 = self._Name.replace(".fits", "_apphot_%s.reg" % photObject._Name.replace(" ",""))
try:
regionOut = open(coordfilename2, "w")
regionOut.write("image; circle(%s, %s, %s) # color = red\n"% (photObject._pixelx, photObject._pixely, photObject._fap))
regionOut.write("image; circle(%s, %s, %s) # color = blue\n" % (photObject._pixelx, photObject._pixely, photObject._fdan))
regionOut.write("image; circle(%s, %s, %s) # color = green\n" % (photObject._pixelx, photObject._pixely, photObject._fan))
regionOut.close()
except:
print "ERROR opening region file to write"
print sys.exc_info()[0]
try:
objectList = open(coordfilename,"r")
objectList.close()
except:
objectList = open(coordfilename,"w")
objectList.write("%s %s" % (photObject._pixelx, photObject._pixely))
objectList.close()
# Load as in IRAF and neglect output:
# NOAO
# DIGIPHOT
# APPHOT
# DAOFIND
iraf.noao(_doprint=0)
iraf.digiphot(_doprint=0)
iraf.apphot(_doprint=0)
# DAOPHOT/APPHOT - PHOT Package
# Parameters:
#
# image
# skyfile???
# coords - input file
# output - output file
# datapars
# centerpars
# fitskypars
# photpars
cwd = os.getcwd()
# datapars:
datapars = "%s/uparm/datapars.par" % cwd
#datapars = "uparm/datapars.par"
#iraf.datapars.saveParList(filename=datapars)
# centerpars:
centerpars = "%s/uparm/centerpars.par" % cwd
#centerpars = "uparm/centerpars.par"
# iraf.centerpars.saveParList(filename=centerpars)
# fitskypars:
fitskypars = "%s/uparm/fitskypars.par" % cwd
#fitskypars = "uparm/fitskypars.par"
# iraf.fitskypars.saveParList(filename=fitskypars)
# photpars:
photpars = "%s/uparm/photpars.par" % cwd
#photpars = "uparm/photpars.par"
# iraf.photpar.saveParList(filename=photpars)
#iraf.datapar(sigma=1.5, exposure='IMGEXP', gain='GAIN', ccdread='RON')
# standard
#iraf.phot.setParam('image', self._Name)
#iraf.phot.setParam("output", self._Name.replace(".fits", "_phot.mag"))
#iraf.phot.setParam("datapar", datapars)
#iraf.phot.setParam("centerp", centerpars)
#iraf.phot.setParam("fitskyp", fitskypars)
#iraf.phot.setParam("photpar", photpars)
#iraf.phot.setParam("interac", "no")
#iraf.phot.setParam("verify", "yes")
# co-ordinate file
iraf.phot.setParam("coords", coordfilename)
# run phot
apphotpar = "%s/uparm/phot.par" % cwd
# iraf.phot.saveParList(filename=apphotpar)
output = self._Name.replace(".fits", "_objectID%s_phot.mag" % photObject._id)
try:
self.cleanOutputFiles(output)
except:
print "Error cleaning failed"
print sys.exc_info()[0]
#apsizes= (.4*fap*self._MEDFWHM,.5*fap*self._MEDFWHM,.6*fap*self._MEDFWHM,.8*fap*self._MEDFWHM,
# 1.*fap*self._MEDFWHM,1.2*fap*self._MEDFWHM, 1.5*fap*self._MEDFWHM,2.*fap*self._MEDFWHM,
# 2.5*fap*self._MEDFWHM,3.*fap*self._MEDFWHM
# )
#irafapsizes = '%.2f,%.2f,%.2f,%.2f,%.2f,%.2f,%.2f,%.2f,%.2f,%.2f' % apsizes
#irafapsizes = '%.2f' % (5*apsizes[4])
self.loadHeader()
if self._Band in ["J", "H", "K"]:
ifilter = self.getHeader("FILTER")
else:
ifilter = self.getHeader("SUBSET")
print "FILTER: %s" % ifilter
print "RON: %s" % self.getHeader("RON")
print "GAIN: %s" % self.getHeader("GAIN")
print "EXPTIME: %s" % self.getHeader("EXPTIME")
print "AIRMASS: %s" % self.getHeader("AIRMASS")
print "DATE: %s" % self.getHeader("DATE-OBS")
print "ZP: %s" % self._ZPDICT[self.getHeader("FILTER")]
try:
EPADU = (2/3)*self.getHeader("NIMGS")*self.getHeader("GAIN")
print "Keyword used: NIMGS"
except:
EPADU = (2/3)**self.getHeader("NCOMBINE")*self.getHeader("GAIN")
print "Keyword uparmsed: NCOMBINE"
iraf.phot(image=self._Name,
coords=coordfilename,
output=output,
verify=0,
verbose=1,
interac="no",
scale=1,
fwhmpsf=self._MEDFWHM,
sigma=self._skySTDEV,
wcsin="logical",
wcsout="logical",
datamin=-100,
datamax="INDEF",
zmag=self._ZPDICT[self.getHeader("FILTER")], # to do: make function to calculate
annulus=photObject._fan,
dannulus=photObject._fdan,
calgorithm="none",
aperture=photObject._fap,
cbox=1.5*self._MEDFWHM,
maxshift=15,
mode="ql",
Stdout=1,
readnoi=self.getHeader("RON"),
epadu=EPADU,
itime=self.getHeader("EXPTIME"),
xairmass=self.getHeader("AIRMASS"),
ifilter=ifilter,
otime=self.getHeader("DATE-OBS"),
salgori="mode",
#skyvalu=0,
smaxite=1
)
# Parse the output
photout = open(output, "r")
photoObjectProperties = photout.readlines()
photout.close()
propList = []
for Properties in photoObjectProperties:
if Properties[0] != "#":
Property = [i for i in Properties.replace("\n","").replace("\\","").split(" ") if i != ""]
propList.append(Property)
try:
photObject._skyFlux = float(propList[3][0])
except:
photObject._skyFlux = (propList[3][0])
try:
photObject._flux = float(propList[4][1])
except:
photObject._flux = (propList[4][1])
try:
photObject._appMag = float(propList[4][4])
except:
photObject._appMag = (propList[4][4])
try:
photObject._appMagErr = float(propList[4][5])
except:
photObject._appMagErr = (propList[4][5])
photObject._midMJD, photObject._midMJDErr = self.getMidMJD()#seconds=True,zero=55822.89371528)
def run_daophot(image, outfile='default', coordfile='NA', backmethod='mean', backval=None, backsigma=None,rdnoise=None,\
apertures='1,2,3,4,5,6,7,8,9,10,12,14,16,18,20,24,28,32,36,40,45,50,55,60,65,70', cbox=3.0, \
annulus=17.0, dannulus=3.0, calgorithm='centroid', salgorithm='median', fwhmpsf=2.5, epadu=1.0):
'''THIS PROCEDURE RUNS DAOPHOT ON INPUT IMAGE'''
# Parse input parameters
if outfile == 'default': outfile = image + '0.mag'
if coordfile == 'NA': coordfile = image + '0.coo'
# -- extract header info
prihdr = pyfits.getheader(image)
exptime = prihdr['exptime']
instrum = prihdr['INSTRUME']
detector = prihdr['DETECTOR']
SUBARRAY = prihdr['SUBARRAY']
ccdamp = prihdr['CCDAMP']
if instrum == 'WFC3': filter = prihdr['FILTER']
elif instrum == 'ACS':
filter = prihdr['FILTER1']
if filter[0] == 'C': filter == prihdr['FILTER2']
else:
raise Exception('Instrument ' + instrum +
' not covered in our case list.')
# -- record native pixel scale and no. of chips
if instrum == 'WFC3':
if detector == 'UVIS':
pscale_nat = 0.03962
if ((SUBARRAY == True) & (len(ccdamp) == 1)): nchips = 1.0
elif SUBARRAY == False: nchips = 2.0
else: raise Exception('Image type is not defined.')
elif detector == 'IR':
pscale_nat = 0.12825
nchips = 1.0
else:
raise Exception('WFC3 Detector ' + detector +
' not covered in our case list.')
elif instrum == 'ACS':
if detector == 'WFC':
pscale_nat = 0.049
if ((SUBARRAY == True) & (len(ccdamp) == 1)): nchips = 1.0
elif SUBARRAY == False: nchips = 2.0
else: raise Exception('Image type is not defined.')
else:
raise Exception('ACS Detector ' + detector +
' not covered in our case list.')
else:
raise Exception('Instrument ' + instr +
' not covered in our case list.')
# -- record pixel scale of current image, image type, image axis lengths, and number of flts
sciext = []
pscale_img = prihdr.get('D001SCAL', default='NA')
if pscale_img == 'NA':
imtype = 'flt' # we dont distinguish between flt/crclean, i.e., assume pscales are equal
pscale_img = pscale_nat
num_flts = 1.0
naxis1 = pyfits.getval(image, 'NAXIS1', ext=('SCI', 1))
naxis2 = pyfits.getval(image, 'NAXIS2', ext=('SCI', 1))
# -- record location of science extension
hdulist = pyfits.open(image)
for ext in xrange(len(hdulist)):
if hdulist[ext].name == 'SCI': sciext.append(ext)
hdulist.close()
if len(sciext) != 1:
raise Exception('We do not handle images with ' +
str(len(sciext)) + ' SCI extensions.')
else:
imtype = 'drz'
num_flts = prihdr['NDRIZIM'] / nchips
naxis1 = pyfits.getval(image, 'NAXIS1', ext=0)
naxis2 = pyfits.getval(image, 'NAXIS2', ext=0)
sciext.append(0)
# -- get zeropoints
if instrum == 'WFC3': zeropt = get_wfc3_zeropoint(filter)
elif instrum == 'ACS' and imtype == 'drz':
zeropt = get_acs_zeropoint(prihdr)
elif instrum == 'ACS' and imtype == 'flt':
zeropt = get_acs_zeropoint(pyfits.getheader(image, ext=('SCI', 1)))
# -- estimate read noise
if rdnoise == None:
rdnoise = np.zeros(len(ccdamp))
for namp in xrange(len(ccdamp)):
rdnoise[namp] = prihdr['READNSE' + ccdamp[namp]]
rdnoise_corr = np.sqrt(num_flts *
(np.average(rdnoise) * pscale_img / pscale_nat)**2)
# -- measure the background and noise
if ((backval == None) | (backsigma == None)):
# -- read in the x/y center of the source
xc, yc = np.loadtxt(coordfile, unpack=True, usecols=(0, 1))
# -- create temporary image for bckgrd measurement that masks sources out to 80 pixels (assign a very low number)
tmp_image = image + '.back.fits'
shutil.copy(image, tmp_image)
hdulist = pyfits.open(tmp_image, mode='update')
maskim = hdulist[sciext[0]].data
if detector == 'IR': maskrad = 30
else: maskrad = 80
maskim[circular_mask(maskim.shape,
maskrad,
x_offset=(xc - naxis1 / 2.0),
y_offset=(yc - naxis2 / 2.0))] = -99999.0
# -- Also mask out sources with zero effective exposure [WE ELIMINATE PIXELS WITHIN 20 OF IMAGE BORDER]
maskim[:, 0:20] = -99999.0
maskim[:, -20:] = -99999.0
maskim[0:20, :] = -99999.0
maskim[-20:, :] = -99999.0
# -- generate initial guess for lower/upper limits (use 10 sigma)
fmaskim = np.ndarray.flatten(maskim)
llim = -100
ulim = 10000.0
init_median, init_rms = meanclip(fmaskim[(fmaskim > llim)
& (fmaskim < ulim)],
maxiter=7,
return_median=1)
llim = init_median - 10.0 * init_rms
ulim = init_median + 10.0 * init_rms
# -- measure background and rms
if backmethod.lower() == 'mean':
back, backrms = meanclip(fmaskim[(fmaskim > llim)
& (fmaskim < ulim)],
maxiter=7)
elif backmethod.lower() == 'median':
back, backrms = meanclip(fmaskim[(fmaskim > llim)
& (fmaskim < ulim)],
maxiter=7,
return_median=1)
elif backmethod.lower() == 'mode':
backmean, backrms = meanclip(fmaskim[(fmaskim > llim)
& (fmaskim < ulim)],
maxiter=7)
nbins = np.ceil(80.0 / (0.1 * backrms))
cc, bb, pp = pylab.hist(fmaskim[(fmaskim > llim)
& (fmaskim < ulim)],
log=True,
bins=nbins,
range=(-40.0, 40.0))
back = bb[cc.argmax()] + (bb.max() - bb.min()) / (2.0 *
(len(bb) - 1))
else:
raise Exception('Background statistical method ' + backmethod +
' is not covered in our case list.')
if backval == None: backval = back
if backsigma == None: backsigma = backrms
print '\n BACKGROUND = ' + str(backval)
print ' BACKGROUND RMS = ' + str(backsigma) + ' \n'
# Case of no aperture size given (we select aperture sizes of UVIS=0.2/0.4", IR=0.27/0.4", ACS=0.25/0.5")
if apertures == '':
if instrum == 'WFC3' and detector == 'IR':
apertures = str(0.27 / pscale_img) + ',' + str(
0.4 / pscale_img)
elif instrum == 'WFC3' and detector == 'UVIS':
apertures = str(0.2 / pscale_img) + ',' + str(0.4 / pscale_img)
elif instrum == 'ACS' and detector == 'WFC':
apertures = str(0.25 / pscale_img) + ',' + str(
0.5 / pscale_img)
else:
raise exception('Instrument/Detector ' + instrum + '/' +
detector + ' not covered in case list.')
# Remove old phot output files
file_query = os.access(outfile, os.R_OK)
if file_query == True: os.remove(outfile)
# Run phot
iraf.phot.unlearn() # reset daophot parameters to default values
iraf.phot(image=image+'['+str(sciext[0])+']', interactive='no', verify='no', coords=coordfile, output=outfile, \
fwhmpsf=fwhmpsf, sigma=backsigma, readnoise=rdnoise_corr, itime=exptime, calgorithm=calgorithm, \
cbox=cbox, skyvalue=backval,apertures=apertures,zmag=zeropt,salgorithm='constant')
#annulus=annulus, dannulus=dannulus
return backval, backsigma # return computed background stats for image
def compute_psf_image(params,g,psf_deg=1,psf_rad=8,
star_file='phot.mags',psf_image='psf.fits',edge_dist=5):
iraf.digiphot()
iraf.daophot()
fp = params.loc_output+os.path.sep
f_im = g.image*g.mask
f = fp+'temp.ref.fits'
write_image(f_im,f)
g.fw = np.max([1.5,g.fw])
g.fw = np.min([0.5*params.psf_max_radius,g.fw])
logfile = fp+'psf.log'
fd = fits.getdata(f)
xmax = fd.shape[0] - edge_dist
ymax = fd.shape[1] - edge_dist
for d in ['temp.stars','temp.phot','temp.phot1','temp.phot2','temp.pst',
'temp.opst','temp.opst2',
'temp.psf.fits','temp.psf1.fits','temp.psf2.fits','temp.psg',
'temp.psg2','temp.psg3','temp.psg5','temp.rej','temp.rej2',
'temp.sub.fits','temp.sub1.fits',
'temp.sub2.fits','temp.opst1','temp.opst3','temp.rej3',
'temp.nst','temp.stars1','ref.mags',psf_image,'temp.als',
'temp.als2']:
if os.path.exists(fp+d):
os.remove(fp+d)
# locate stars
iraf.daofind(image=f,output=fp+'temp.stars',interactive='no',verify='no',
threshold=3,sigma=params.star_detect_sigma,fwhmpsf=g.fw,
datamin=1,datamax=params.pixel_max,
epadu=params.gain,readnoise=params.readnoise,
noise='poisson')
if params.star_file:
als_recenter = 'no'
all_template_stars = np.genfromtxt(params.star_file)
all_new_stars = np.genfromtxt(fp+'temp.stars')
if all_new_stars.shape[0] > params.star_file_number_match:
new_stars = all_new_stars[all_new_stars[:,2].argsort()][:params.star_file_number_match]
else:
new_stars = all_new_stars
if all_template_stars.shape[0] > params.star_file_number_match:
template_stars = all_template_stars[all_template_stars[:,3].argsort()][:params.star_file_number_match]
else:
template_stars = all_template_stars
tx, ty = compute_xy_shift(new_stars,template_stars[:,1:3],0.5,
degree=params.star_file_transform_degree)
if params.star_file_has_magnitudes:
star_positions = all_template_stars[:,1:4]
xx = (star_positions[:,0]-np.mean(new_stars[:,0]))/np.mean(new_stars[:,0])
yy = (star_positions[:,1]-np.mean(new_stars[:,1]))/np.mean(new_stars[:,1])
for m in range(params.star_file_transform_degree+1):
for n in range(params.star_file_transform_degree+1-m):
star_positions[:,0] += tx[m,n]* xx**m * yy**n
star_positions[:,1] += ty[m,n]* xx**m * yy**n
np.savetxt(fp+'temp.stars.1',star_positions,fmt='%10.3f %10.3f %10.3f')
else:
star_positions = all_template_stars[:,1:3]
xx = (star_positions[:,0]-np.mean(new_stars[:,0]))/np.mean(new_stars[:,0])
yy = (star_positions[:,1]-np.mean(new_stars[:,1]))/np.mean(new_stars[:,1])
for m in range(params.star_file_transform_degree+1):
for n in range(params.star_file_transform_degree+1-m):
star_positions[:,0] += tx[m,n]* xx**m * yy**n
star_positions[:,1] += ty[m,n]* xx**m * yy**n
np.savetxt(fp+'temp.stars.1',star_positions,fmt='%10.3f %10.3f')
all_template_stars[:,1] = star_positions[:,0]
all_template_stars[:,2] = star_positions[:,1]
else:
als_recenter = 'yes'
star_positions = np.genfromtxt(fp+'temp.stars')
np.savetxt(fp+'temp.stars.1',star_positions[:,:2],fmt='%10.3f %10.3f')
iraf.phot(image=f,output=fp+'temp.phot',coords=fp+'temp.stars.1',interactive='no',
verify='no',
sigma=params.star_detect_sigma,fwhmpsf=g.fw,apertures=g.fw,
datamin=1,
datamax=2*params.pixel_max,epadu=params.gain,annulus=3*g.fw,
dannulus=3.0,
readnoise=params.readnoise,noise='poisson')
print 'fw = ',g.fw
#fw = np.max([4.0,fw])
#print 'fw = ',fw
# select PSF stars
iraf.pstselect(image=f,photfile=fp+'temp.phot',pstfile=fp+'temp.pst',maxnpsf=40,
interactive='no',verify='no',datamin=1,fitrad=2.0,
datamax=params.pixel_max,epadu=params.gain,psfrad=np.max([3.0,g.fw]),
readnoise=params.readnoise,noise='poisson')
if params.star_file and params.star_file_has_magnitudes:
# We don't need to do the photometry - only make the PSF
# Initial PSF estimate to generate PSF groups
#psfrad=3*np.max([g.fw,1.8])
iraf.psf(image=f,photfile=fp+'temp.phot',pstfile=fp+'temp.pst',psfimage=fp+'temp.psf',
function=params.psf_profile_type,opstfile=fp+'temp.opst',
groupfile=fp+'temp.psg',
interactive='no',
verify='no',varorder=0 ,psfrad=2*np.max([g.fw,1.8]),
datamin=-10000,datamax=0.95*params.pixel_max,
scale=1.0)
# construct a file of the psf neighbour stars
slist = []
psf_stars = np.loadtxt(fp+'temp.opst',usecols=(0,1,2))
for star in range(psf_stars.shape[0]):
xp = psf_stars[star,1]
yp = psf_stars[star,2]
xmin = np.max([np.int(xp-10*g.fw),0])
xmax = np.min([np.int(xp+10*g.fw),f_im.shape[0]])
ymin = np.max([np.int(yp-10*g.fw),0])
ymax = np.min([np.int(yp+10*g.fw),f_im.shape[1]])
p = star_positions[np.logical_and(np.logical_and(star_positions[:,0]>xmin,
star_positions[:,0]<xmax),
np.logical_and(star_positions[:,1]>ymin,
star_positions[:,1]<ymax))]
slist.append(p)
group_stars = np.concatenate(slist)
np.savetxt(fp+'temp.nst',group_stars,fmt='%10.3f %10.3f %10.3f')
# subtract PSF star neighbours
iraf.substar(image=f,photfile=fp+'temp.nst',psfimage=fp+'temp.psf',
exfile=fp+'temp.opst',fitrad=2.0,
subimage=fp+'temp.sub1',verify='no',datamin=1,
datamax=params.pixel_max,epadu=params.gain,
readnoise=params.readnoise,noise='poisson')
# final PSF
iraf.psf(image=fp+'temp.sub1',photfile=fp+'temp.phot',pstfile=fp+'temp.opst',
psfimage=psf_image,psfrad=2*g.fw,
function=params.psf_profile_type,opstfile=fp+'temp.opst2',
groupfile=fp+'temp.psg2',
interactive='no',
verify='no',varorder=0,
datamin=1,datamax=0.95*params.pixel_max,
scale=1.0)
np.savetxt(fp+'ref.mags',all_template_stars,fmt='%7d %10.3f %10.3f %10.3f')
stars = all_template_stars
else:
# initial PSF estimate
iraf.psf(image=f,photfile=fp+'temp.phot',pstfile=fp+'temp.pst',psfimage=fp+'temp.psf',
function=params.psf_profile_type,opstfile=fp+'temp.opst',
groupfile=fp+'temp.psg1',
interactive='no',
verify='no',varorder=0 ,psfrad=2*g.fw,
datamin=1,datamax=0.95*params.pixel_max,
scale=1.0)
# separation distance of near neighbours
separation = np.max([rewrite_psg(fp+'temp.psg1',fp+'temp.psg2'),3])
print 'separation = ',separation
# subtract all stars using truncated PSF
iraf.allstar(image=f,photfile=fp+'temp.phot',psfimage=fp+'temp.psf',
allstarfile=fp+'temp.als',rejfile='',
subimage=fp+'temp.sub',verify='no',psfrad=2*g.fw,fitrad=2.0,
recenter='yes',groupsky='yes',fitsky='yes',sannulus=7,wsannulus=10,
datamin=1,datamax=params.pixel_max,
epadu=params.gain,readnoise=params.readnoise,
noise='poisson')
if params.star_file:
os.system('cp '+fp+'temp.phot '+fp+'temp.phot2')
else:
# locate new stars
iraf.daofind(image=fp+'temp.sub',output=fp+'temp.stars1',interactive='no',verify='no',
threshold=3,sigma=params.star_detect_sigma,fwhmpsf=2*g.fw,
datamin=1,datamax=params.pixel_max,
epadu=params.gain,readnoise=params.readnoise,
noise='poisson')
# magnitudes for new stars
iraf.phot(image=fp+'temp.sub',output=fp+'temp.phot1',coords=fp+'temp.stars1',
interactive='no',
verify='no',sigma=params.star_detect_sigma,
fwhmpsf=g.fw,datamin=1,
datamax=params.pixel_max,epadu=params.gain,
readnoise=params.readnoise,noise='poisson')
# join star lists together
iraf.pconcat(infiles=fp+'temp.phot,'+fp+'temp.phot1',outfile=fp+'temp.phot2')
# new PSF estimate to generate PSF groups
iraf.psf(image=f,photfile=fp+'temp.phot2',pstfile=fp+'temp.pst',psfimage=fp+'temp.psf2',
function=params.psf_profile_type,opstfile=fp+'temp.opst2',
groupfile=fp+'temp.psg3',
interactive='no',
verify='no',varorder=0 ,psfrad=2*g.fw,
datamin=-10000,datamax=0.95*params.pixel_max,
scale=1.0)
# magnitudes for PSF group stars
iraf.nstar(image=f,groupfile=fp+'temp.psg3',psfimage=fp+'temp.psf2',
nstarfile=fp+'temp.nst',
rejfile='',verify='no',psfrad=2*g.fw,fitrad=2.0,
recenter='no',
groupsky='yes',fitsky='yes',sannulus=7,wsannulus=10,
datamin=1,datamax=params.pixel_max,
epadu=params.gain,readnoise=params.readnoise,noise='poisson')
# subtract PSF star neighbours
iraf.substar(image=f,photfile=fp+'temp.nst',psfimage=fp+'temp.psf2',
exfile=fp+'temp.opst2',fitrad=2.0,
subimage=fp+'temp.sub1',verify='no',datamin=1,
datamax=params.pixel_max,epadu=params.gain,
readnoise=params.readnoise,noise='poisson')
# final PSF
iraf.psf(image=fp+'temp.sub1',photfile=fp+'temp.phot2',
pstfile=fp+'temp.opst2',
psfimage=psf_image,psfrad=2*g.fw,
function=params.psf_profile_type,opstfile=fp+'temp.opst3',
groupfile=fp+'temp.psg5',
interactive='no',
verify='no',varorder=0,
datamin=1,datamax=0.95*params.pixel_max,
scale=1.0)
# final photometry
iraf.allstar(image=g.fullname,photfile=fp+'temp.phot2',psfimage=psf_image,
allstarfile=fp+'temp.als2',rejfile='',
subimage=fp+'temp.sub2',verify='no',psfrad=2*g.fw,
recenter=als_recenter,groupsky='yes',fitsky='yes',sannulus=7,
wsannulus=10,fitrad=2.0,
datamin=params.pixel_min,datamax=params.pixel_max,
epadu=params.gain,readnoise=params.readnoise,
noise='poisson')
psfmag = 10.0
for line in open(fp+'temp.als2','r'):
sline = line.split()
if sline[1] == 'PSFMAG':
psfmag = float(sline[3])
break
if params.star_file:
iraf.psort(infiles=fp+'temp.als2',field='ID')
os.system('cp '+fp+'temp.als2 '+fp+'temp.als3')
else:
selection = 'XCE >= '+str(edge_dist)+' && XCE <= '+str(xmax)+' && YCE >= '+str(edge_dist)+' && YCE <= '+str(ymax)+' && MAG != INDEF'
iraf.pselect(infiles=fp+'temp.als2',outfiles=fp+'temp.als3',expr=selection)
iraf.psort(infiles=fp+'temp.als3',field='MAG')
iraf.prenumber(infile=fp+'temp.als3')
s = iraf.pdump(infiles=fp+'temp.als3',Stdout=1,
fields='ID,XCENTER,YCENTER,MAG,MERR,MSKY,SHARPNESS,CHI',expr='yes')
sf = [k.replace('INDEF','22.00') for k in s]
stars = np.zeros([len(sf),5])
for i, line in enumerate(sf):
stars[i,:] = np.array(map(float,sf[i].split()[1:6]))
s = iraf.pdump(infiles=fp+'temp.als3',Stdout=1,
fields='ID,XCENTER,YCENTER,MAG,MERR,SHARPNESS,CHI,MSKY',expr='yes')
sf = [k.replace('INDEF','22.00') for k in s]
with open(fp+'ref.mags','w') as fid:
for s in sf:
fid.write(s+'\n')
return stars
def psffit(img, fwhm, psfstars, hdr, interactive, _datamax=45000, psffun='gauss', fixaperture=False):
'''
giving an image, a psffile compute the psf using the file _psf.coo
'''
import lsc
_ron = lsc.util.readkey3(hdr, 'ron')
_gain = lsc.util.readkey3(hdr, 'gain')
if not _ron:
_ron = 1
print 'warning ron not defined'
if not _gain:
_gain = 1
print 'warning ron not defined'
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
zmag = 0.
varord = 0 # -1 analitic 0 - numeric
if fixaperture:
print 'use fix aperture 5 8 10'
hdr = lsc.util.readhdr(img+'.fits')
_pixelscale = lsc.util.readkey3(hdr, 'PIXSCALE')
a1, a2, a3, a4, = float(5. / _pixelscale), float(5. / _pixelscale), float(8. / _pixelscale), float(
10. / _pixelscale)
else:
a1, a2, a3, a4, = int(fwhm + 0.5), int(fwhm * 2 + 0.5), int(fwhm * 3 + 0.5), int(fwhm * 4 + 0.5)
iraf.fitskypars.annulus = a4
iraf.fitskypars.salgori = 'mean' #mode,mean,gaussian
iraf.photpars.apertures = '%d,%d,%d' % (a2, a3, a4)
iraf.datapars.datamin = -100
iraf.datapars.datamax = _datamax
iraf.datapars.readnoise = _ron
iraf.datapars.epadu = _gain
iraf.datapars.exposure = 'EXPTIME'
iraf.datapars.airmass = ''
iraf.datapars.filter = ''
iraf.centerpars.calgori = 'centroid'
iraf.centerpars.cbox = a2
iraf.daopars.recenter = 'yes'
iraf.photpars.zmag = zmag
iraf.delete('_psf.ma*,' + img + '.psf.fit?,_psf.ps*,_psf.gr?,_psf.n*,_psf.sub.fit?', verify=False)
iraf.phot(img+'[0]', '_psf.coo', '_psf.mag', interac=False, verify=False, verbose=False)
iraf.daopars.psfrad = a4
iraf.daopars.functio = psffun
iraf.daopars.fitrad = a1
iraf.daopars.fitsky = 'yes'
iraf.daopars.sannulus = a4
iraf.daopars.recenter = 'yes'
iraf.daopars.varorder = varord
if interactive:
shutil.copyfile('_psf.mag', '_psf.pst')
print '_' * 80
print '>>> Mark good stars with "a" or "d"-elete. Then "f"-it,' + \
' "w"-write and "q"-uit (cursor on ds9)'
print '-' * 80
else:
iraf.pstselect(img+'[0]', '_psf.mag', '_psf.pst', psfstars, interac=False, verify=False)
iraf.psf(img + '[0]', '_psf.mag', '_psf.pst', img + '.psf', '_psf.psto', '_psf.psg', interac=interactive,
verify=False, verbose=False)
iraf.group(img + '[0]', '_psf.mag', img + '.psf', '_psf.grp', verify=False, verbose=False)
iraf.nstar(img + '[0]', '_psf.grp', img + '.psf', '_psf.nst', '_psf.nrj', verify=False, verbose=False)
photmag = iraf.txdump("_psf.mag", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
pst = iraf.txdump("_psf.pst", 'xcenter,ycenter,id', expr='yes', Stdout=1)
fitmag = iraf.txdump("_psf.nst", 'xcenter,ycenter,id,mag,merr', expr='yes', Stdout=1)
return photmag, pst, fitmag
def alignImages(imageName, imageName_Ha):
#Read the fwhm and seeing from the image file
imageHeader = fits.open(imageName + ".fits")[0]
fwhm = imageHeader.header['SEEING']
annul = 5.0 * fwhm
aper = 3.0 * fwhm
sigma = imageHeader.header['SKYSIGMA']
iraf.daophot(_doprint=0)
#Do 'daofind' on the image to locate the stars
print("1. Find stars using 'daofind'")
#Configure 'datapars', 'findpars', and 'daofind'
iraf.datapars.fwhmpsf = fwhm
iraf.datapars.sigma = sigma
iraf.datapars.datamin = -10
iraf.datapars.ccdread = "RDNOISE"
iraf.datapars.gain = "GAIN"
iraf.datapars.exposure = "EXPTIME"
iraf.datapars.airmass = "AIRMASS"
iraf.datapars.filter = "FILTER"
iraf.datapars.obstime = "TIME-OBS"
iraf.findpars.threshold = 20 * sigma
iraf.findpars.sharplo = 0.2
iraf.findpars.sharphi = 1.0
iraf.findpars.roundlo = -1.0
iraf.findpars.roundhi = 1.0
iraf.daofind.verify = 'no'
iraf.daofind.verbose = 'no'
#Delete exisiting coordinate,output files of 'phot',file containg data of 'good' stars, old images
for f in ("coord", "mag", "psel", "R_final.fits", "Ha_final.fits"):
silentDelete(f)
iraf.daofind(imageName, 'coord')
print("File containing the coordinates of the stars is coord")
print(" ")
#Configure 'centerpars', 'fitskypars','photpars'
iraf.datapars.datamax = 150000
iraf.centerpars.calgorithm = "centroid"
iraf.centerpars.cbox = 16
iraf.centerpars.maxshift = 3
iraf.fitskypars.salgorithm = "mode"
iraf.fitskypars.annulus = annul
iraf.fitskypars.dannulus = 10
iraf.photpars.apertures = aper
iraf.phot.verify = 'no'
iraf.phot.verbose = 'no'
print("2. Obtain data of stars using 'phot'")
#Call 'phot' to get the data of the stars
iraf.phot(imageName, 'coord', 'mag')
#sort in order of increasing magnitude of stars
iraf.psort('mag', "mag")
boundsig = sigma + 2
boexpr = "CIER==0 && PIER==0 && STDEV <=" + str(boundsig)
print(
"File containing the data of the stars in order of decreasing brightness is mag"
)
print(" ")
print("3. Select stars with low error, no bad pixels")
#Select stars that have no centering error, skyerror <sig+2 and no bad pixels
iraf.pselect("mag", "psel", boexpr)
print(
"File containing stars with low sky error,low centering error is psel")
print(" ")
#Renumber the ID number of the stars in order of increasing magnitude
iraf.prenumber("psel")
#Delete existing files
for f in ("pdump.file", "stars25", 'alR.fits', 'rIn.fits', 'haIn.fits'):
silentDelete(f)
print("4. Select the 25 brightest stars")
iraf.pselect("psel", "stars25", "ID <=25")
print("File containing the brightest 25 'good' stars is stars25")
print(" ")
#Pick out only the required data of stars from the .25 file
sys.stdout = open("pdump.file", "w")
iraf.pdump("stars25", "xcenter,ycenter,flux", "yes")
sys.stdout = sys.__stdout__
print("The coordinates and flux are stored in pdump.file")
#Align images
iraf.imcopy(imageName, 'rIn')
iraf.imcopy(imageName_Ha, 'haIn')
print("Aligning images")
#iraf.imalign.verbose='no'
iraf.imalign("rIn,haIn", "rIn", "pdump.file", "R_final,Ha_final")
def psffit(img,
fwhm,
psfstars,
hdr,
interactive,
_datamin,
_datamax,
psffun='gauss',
fixaperture=False):
'''
giving an image, a psffile compute the psf using the file _psf.coo
'''
import lsc
_ron = lsc.util.readkey3(hdr, 'ron')
_gain = lsc.util.readkey3(hdr, 'gain')
if not _ron:
_ron = 1
print 'warning ron not defined'
if not _gain:
_gain = 1
print 'warning gain not defined'
iraf.digiphot(_doprint=0)
iraf.daophot(_doprint=0)
zmag = 0.
varord = 0 # -1 analitic 0 - numeric
if fixaperture:
print 'use fix aperture 5 8 10'
hdr = lsc.util.readhdr(img + '.fits')
_pixelscale = lsc.util.readkey3(hdr, 'PIXSCALE')
a1, a2, a3, a4, = float(5. / _pixelscale), float(
5. / _pixelscale), float(8. / _pixelscale), float(10. /
_pixelscale)
else:
a1, a2, a3, a4, = int(fwhm + 0.5), int(fwhm * 2 +
0.5), int(fwhm * 3 +
0.5), int(fwhm * 4 +
0.5)
iraf.fitskypars.annulus = a4
iraf.fitskypars.salgori = 'mean' #mode,mean,gaussian
iraf.photpars.apertures = '%d,%d,%d' % (a2, a3, a4)
iraf.datapars.datamin = _datamin
iraf.datapars.datamax = _datamax
iraf.datapars.readnoise = _ron
iraf.datapars.epadu = _gain
iraf.datapars.exposure = 'EXPTIME'
iraf.datapars.airmass = ''
iraf.datapars.filter = ''
iraf.centerpars.calgori = 'centroid'
iraf.centerpars.cbox = a2
iraf.daopars.recenter = 'yes'
iraf.photpars.zmag = zmag
psfout = img.replace('.zogypsf', '') + '.psf.fits'
iraf.delete('_psf.ma*,_psf.ps*,_psf.gr?,_psf.n*,_psf.sub.fit?,' + psfout,
verify=False)
iraf.phot(img + '[0]',
'_psf.coo',
'_psf.mag',
interac=False,
verify=False,
verbose=False)
# removes saturated stars from the list (IRAF just issues a warning)
with open('_psf.mag') as f:
text = f.read()
text = re.sub('(.*\n){6}.*BadPixels\* \n', '', text)
with open('_psf.mag', 'w') as f:
f.write(text)
iraf.daopars.psfrad = a4
iraf.daopars.functio = psffun
iraf.daopars.fitrad = a1
iraf.daopars.fitsky = 'yes'
iraf.daopars.sannulus = a4
iraf.daopars.recenter = 'yes'
iraf.daopars.varorder = varord
if interactive: # not possible to run pstselect or psf interactively on 64-bit linux (Error 851)
os.system('cp _psf.mag _psf.pst')
print '_' * 80
print '>>> Mark good stars with "a" or "d"-elete. Then "f"-it,' + \
' "w"-write and "q"-uit (cursor on ds9)'
print '-' * 80
else:
iraf.pstselect(img + '[0]',
'_psf.mag',
'_psf.pst',
psfstars,
interac=False,
verify=False)
iraf.psf(img + '[0]',
'_psf.mag',
'_psf.pst',
psfout,
'_psf.psto',
'_psf.psg',
interac=interactive,
verify=False,
verbose=False)
iraf.group(img + '[0]',
'_psf.mag',
psfout,
'_psf.grp',
verify=False,
verbose=False)
iraf.nstar(img + '[0]',
'_psf.grp',
psfout,
'_psf.nst',
'_psf.nrj',
verify=False,
verbose=False)
photmag = iraf.txdump("_psf.mag",
'xcenter,ycenter,id,mag,merr',
expr='yes',
Stdout=1)
pst = iraf.txdump("_psf.pst", 'xcenter,ycenter,id', expr='yes', Stdout=1)
fitmag = iraf.txdump("_psf.nst",
'xcenter,ycenter,id,mag,merr',
expr='yes',
Stdout=1)
return photmag, pst, fitmag