# Read in image header and data:
hdulist = pyfits.open(fitsfile)
# Check for empty extension, if so advance to next extension:
k, NAXIS = -1, 0
while NAXIS == 0:
k += 1
hdr = hdulist[k].header
NAXIS = hdr['NAXIS']
img = hdulist[k].data
bad = (img != img)
img[bad] = 0.0
# Read WCS, and measure pixel scale:
wcs = pywcs.WCS(hdr)
cell = proto.pixscale(hdr)
# Extract MJD from FITS header:
if hdr.has_key('PSCAMERA'):
# PS1 data:
MJD = hdr['MJD-OBS']
filter = hdr['HIERARCH FPA.FILTER']
band = string.split(filter, '.')[0]
else:
MJD = hdr['MJD']
band = hdr['FILTER']
MJDstring = "%.5f" % MJD
# Write output png filename:
pngfile = fitsfile.replace('.fits', '_annotated.png')
# Read in image header:
hdulist = pyfits.open(input)
# Check for empty extension, if so advance to next extension:
k,NAXIS = -1,0
while NAXIS == 0 :
k += 1
hdr = hdulist[k].header
NAXIS = hdr['NAXIS']
if vb: print "Read in header from extension",k,"of",input
# Read WCS, and measure pixel scale:
wcs = pywcs.WCS(hdr)
# wcs.wcs.print_contents()
cell = proto.pixscale(hdr)
if vb: print "Pixel scale =",cell
iw = 2*int(0.5*w/cell) + 1
ww = iw*cell
if vb: print "Cutout size =",iw,"pixels, or",ww,"arcsec"
# Check if sky position is in image:
footprint = wcs.calcFootprint(hdr)
print "footprint = ",footprint
if proto.point_inside_polygon(ra0,dec0,footprint):
if vb: print "Object centre does lie in footprint of image"
# Find central pixel:
for scifile in inputfiles:
# Read in image header:
hdulist = pyfits.open(scifile)
# Check for empty extension, if so advance to next extension:
k, NAXIS = -1, 0
while NAXIS == 0:
k += 1
hdr = hdulist[k].header
NAXIS = hdr['NAXIS']
# if vb: print "Read in header from extension",k,"of",scifile
# Read WCS, and measure pixel scale:
wcs = pywcs.WCS(hdr)
pltscale = proto.pixscale(hdr)
# if vb: print "Pixel scale =",pltscale
# Extract filter, MJD, GAIN and zero point from FITS header:
if hdr.has_key('PSCAMERA'):
# PS1 data:
filter = hdr['HIERARCH FPA.FILTER']
# filter = string.split(filter,'.')[0]
MJD = hdr['MJD-OBS']
zpt = hdr['HIERARCH FPA.ZP']
if zpt == 'NaN': zpt = 30.0 # HACK.
gain = hdr['HIERARCH CELL.GAIN']
FWHM = hdr['HIERARCH CHIP.SEEING'] * pltscale # in arcsec
if (FWHM <= 0 or FWHM > 100): FWHM = 0.999999 # red flag value
else:
filter = hdr['FILTER']
for scifile in inputfiles:
# Read in image header:
hdulist = pyfits.open(scifile)
# Check for empty extension, if so advance to next extension:
k,NAXIS = -1,0
while NAXIS == 0 :
k += 1
hdr = hdulist[k].header
NAXIS = hdr['NAXIS']
# if vb: print "Read in header from extension",k,"of",scifile
# Read WCS, and measure pixel scale:
wcs = pywcs.WCS(hdr)
pltscale = proto.pixscale(hdr)
# if vb: print "Pixel scale =",pltscale
# Extract filter, MJD, GAIN and zero point from FITS header:
if hdr.has_key('PSCAMERA') :
# PS1 data:
filter = hdr['HIERARCH FPA.FILTER']
# filter = string.split(filter,'.')[0]
MJD = hdr['MJD-OBS']
zpt = hdr['HIERARCH FPA.ZP']
if zpt == 'NaN': zpt = 30.0 # HACK.
gain = hdr['HIERARCH CELL.GAIN']
FWHM = hdr['HIERARCH CHIP.SEEING']*pltscale # in arcsec
if (FWHM <= 0 or FWHM > 100): FWHM = 0.999999 # red flag value
else :
filter = hdr['FILTER']
