def __init__(self, tablefn=None):
self.kd = None
self.sdssxyz = None
if tablefn is None:
tablefn = find_data_file('dr7fields.fits')
self.tab = fits_table(tablefn)
if self.tab is None:
raise Exception('Failed to read table of SDSS fields from file: "' + str(tablefn) + '"')
def main():
import sys
from optparse import OptionParser
parser = OptionParser(usage='%prog [options] <ra> <dec>')
parser.add_option(
'-f',
dest='fields',
help=
'FITS table of fields to use; default is astrometry/data/dr7fields.fits'
)
parser.add_option(
'-c',
dest='contains',
action='store_true',
help=
'Print only fields that *contain* the given point; requires RAMIN,RAMAX,DECMIN,DECMAX fields.'
)
parser.add_option('-b',
'--bands',
dest='bands',
help='Retrieve fpCs of the given bands; default "ugriz"')
parser.add_option(
'-t',
dest='filetypes',
help='Retrieve this file type (fpC, fpM, psField, tsField, tsObj, etc)',
action='append',
default=['fpC'])
parser.add_option('-r',
dest='radius',
type=float,
default=15.,
help='Search radius (arcmin)')
parser.set_defaults(fields=None, contains=False, bands='ugriz')
(opt, args) = parser.parse_args()
if len(args) != 2:
parser.print_help()
print()
print('Got extra arguments:', args)
sys.exit(-1)
# parse RA,Dec.
try:
ra = float(args[0])
except ValueError:
ra = hmsstring2ra(args[0])
try:
dec = float(args[1])
except ValueError:
dec = dmsstring2dec(args[1])
tablefn = None
if opt.fields is not None:
if os.path.exists(opt.fields):
tablefn = opt.fields
else:
tablefn = find_data_file(opt.fields)
if tablefn is None:
print('Failed to find list of fields:', opt.fields)
sys.exit(-1)
# arcmin
radius = opt.radius
rcfs = radec_to_sdss_rcf(ra,
dec,
radius=radius,
tablefn=tablefn,
contains=opt.contains)
print('ra,dec', ra, dec)
print('rcfs:', rcfs)
print()
for (r, c, f, ra1, dec1) in rcfs:
print('%i %i %i (dist: %g arcmin)' %
(r, c, f, deg2arcmin(degrees_between(ra, dec, ra1, dec1))))
print()
for (r, c, f, ra1, dec1) in rcfs:
print(
'http://cas.sdss.org/dr7/en/get/frameByRCFZ.asp?R=%i&C=%i&F=%i&Z=0&submit1=Get+Image'
% (r, c, f))
print()
for (r, c, f, ra1, dec1) in rcfs:
print(
'wget "http://cas.sdss.org/dr7/en/get/frameByRCFZ.asp?R=%i&C=%i&F=%i&Z=0&submit1=Get+Image" -O sdss-%04i-%i-%04i.jpg'
% (r, c, f, r, c, f))
from .sdss_das import sdss_das_get
for (r, c, f, ra1, dec1) in rcfs:
for t in opt.filetypes:
for b in opt.bands:
R = sdss_das_get(t, None, r, c, f, b)
if R is False:
continue
if t == 'fpC':
fpc = sdss_filename('fpC', r, c, f, b)
os.system('gunzip -cd %s.gz > %s' % (fpc, fpc))
wcs = Tan(filename=fpc)
x, y = wcs.radec2pixelxy(ra, dec)
x, y = int(x), int(y)
os.system('imcopy %s"[%i:%i,%i:%i]" !/tmp/cut-%s' %
(fpc, max(0, x - 100), x + 100, max(
0, y - 100), y + 100, fpc))
os.system(
'an-fitstopnm -i /tmp/cut-%s -N 1150 -X 1400 | pnmtopng > cut-%s.png'
% (fpc, fpc))
print('R,C,F', r, c, f)
print('x,y', x, y)
def OLD_radec_to_sdss_rcf(ra,
dec,
spherematch=True,
radius=0,
tablefn=None,
contains=False):
# This file is generated by merging the files "dr7_e.fits", "dr7_g.fits", and "dr7_a.fits",
# whose construction is described in http://trac.astrometry.net/browser/trunk/projects/sdss-tests/README
# (and in comments below that I didn't notice before writing this)
if tablefn is None:
tablefn = find_data_file('dr7fields.fits')
sdss = table_fields(tablefn)
if sdss is None:
print('Failed to read table of SDSS fields from file', tablefn)
raise Exception('Failed to read table of SDSS fields from file: "' +
str(tablefn) + '"')
sdssxyz = radectoxyz(sdss.ra, sdss.dec)
## HACK - magic 13x9 arcmin.
if radius == 0:
radius = sqrt(13.**2 + 9.**2) / 2.
radius2 = arcmin2distsq(radius)
if not spherematch:
rcfs = []
for r, d in broadcast(ra, dec):
xyz = radectoxyz(r, d)
dist2s = sum((xyz - sdssxyz)**2, axis=1)
I = flatnonzero(dist2s < radius2)
if False:
print('I:', I)
print('fields:', sdss[I].run, sdss[I].field, sdss[I].camcol)
print('RA', sdss[I].ra)
print('Dec', sdss[I].dec)
rcfs.append(
zip(sdss[I].run, sdss[I].camcol, sdss[I].field, sdss[I].ra,
sdss[I].dec))
else:
from astrometry.libkd import spherematch
rds = array([x for x in broadcast(ra, dec)])
xyz = radectoxyz(rds[:, 0], rds[:, 1]).astype(double)
(inds, dists) = spherematch.match(xyz, sdssxyz, sqrt(radius2))
#print 'found %i matches' % len(inds)
if len(inds) == 0:
return []
#print 'inds:', inds.shape
I = np.argsort(dists[:, 0])
#print 'dists:', dists.shape
inds = inds[I, :]
rcfs = [[] for i in range(len(rds))]
cols = sdss.columns()
gotem = False
if contains:
if 'ramin' in cols and 'ramax' in cols and 'decmin' in cols and 'decmax' in cols:
gotem = True
for i, j in inds:
(r, d) = rds[i]
if r >= sdss.ramin[j] and r <= sdss.ramax[
j] and d >= sdss.decmin[j] and d <= sdss.decmax[j]:
rcfs[i].append(
(sdss.run[j], sdss.camcol[j], sdss.field[j],
sdss.ra[j], sdss.dec[j]))
print('%i fields contain the first query RA,Dec' %
len(rcfs[0]))
else:
print('you requested fields *containing* the query RA,Dec,')
print(
'but the fields list file \"%s\" doesn\'t contain RAMIN,RAMAX,DECMIN, and DECMAX columns'
% tablefn)
if not gotem:
for i, j in inds:
rcfs[i].append((sdss.run[j], sdss.camcol[j], sdss.field[j],
sdss.ra[j], sdss.dec[j]))
if isscalar(ra) and isscalar(dec):
return rcfs[0]
return rcfs
# parse RA,Dec.
try:
ra = float(args[0])
except ValueError:
ra = hmsstring2ra(args[0])
try:
dec = float(args[1])
except ValueError:
dec = dmsstring2dec(args[1])
tablefn = None
if opt.fields is not None:
if os.path.exists(opt.fields):
tablefn = opt.fields
else:
tablefn = find_data_file(opt.fields)
if tablefn is None:
print 'Failed to find list of fields:', opt.fields
sys.exit(-1)
# arcmin
radius = 15.
rcfs = radec_to_sdss_rcf(ra,
dec,
radius=radius,
tablefn=tablefn,
contains=opt.contains)
print 'ra,dec', ra, dec
print 'rcfs:', rcfs
print
for (r, c, f, ra1, dec1) in rcfs:
def main():
import sys
from optparse import OptionParser
parser = OptionParser(usage='%prog [options] <ra> <dec>')
parser.add_option('-f', dest='fields', help='FITS table of fields to use; default is astrometry/data/dr7fields.fits')
parser.add_option('-c', dest='contains', action='store_true', help='Print only fields that *contain* the given point; requires RAMIN,RAMAX,DECMIN,DECMAX fields.')
parser.add_option('-b', '--bands', dest='bands', help='Retrieve fpCs of the given bands; default "ugriz"')
parser.add_option('-t', dest='filetypes', help='Retrieve this file type (fpC, fpM, psField, tsField, tsObj, etc)', action='append', default=['fpC'])
parser.add_option('-r', dest='radius', type=float, default=15., help='Search radius (arcmin)')
parser.set_defaults(fields=None, contains=False, bands='ugriz')
(opt, args) = parser.parse_args()
if len(args) != 2:
parser.print_help()
print()
print('Got extra arguments:', args)
sys.exit(-1)
# parse RA,Dec.
try:
ra = float(args[0])
except ValueError:
ra = hmsstring2ra(args[0])
try:
dec = float(args[1])
except ValueError:
dec = dmsstring2dec(args[1])
tablefn = None
if opt.fields is not None:
if os.path.exists(opt.fields):
tablefn = opt.fields
else:
tablefn = find_data_file(opt.fields)
if tablefn is None:
print('Failed to find list of fields:', opt.fields)
sys.exit(-1)
# arcmin
radius = opt.radius
rcfs = radec_to_sdss_rcf(ra,dec,radius=radius, tablefn=tablefn, contains=opt.contains)
print('ra,dec', ra,dec)
print('rcfs:', rcfs)
print()
for (r,c,f,ra1,dec1) in rcfs:
print('%i %i %i (dist: %g arcmin)' % (r,c,f, deg2arcmin(degrees_between(ra,dec,ra1,dec1))))
print()
for (r,c,f,ra1,dec1) in rcfs:
print('http://cas.sdss.org/dr7/en/get/frameByRCFZ.asp?R=%i&C=%i&F=%i&Z=0&submit1=Get+Image' % (r,c,f))
print()
for (r,c,f,ra1,dec1) in rcfs:
print('wget "http://cas.sdss.org/dr7/en/get/frameByRCFZ.asp?R=%i&C=%i&F=%i&Z=0&submit1=Get+Image" -O sdss-%04i-%i-%04i.jpg' % (r,c,f,r,c,f))
from .sdss_das import sdss_das_get
for (r,c,f,ra1,dec1) in rcfs:
for t in opt.filetypes:
for b in opt.bands:
R = sdss_das_get(t, None, r, c, f, b)
if R is False:
continue
if t == 'fpC':
fpc = sdss_filename('fpC', r, c, f, b)
os.system('gunzip -cd %s.gz > %s' % (fpc,fpc))
wcs = Tan(filename=fpc)
x,y = wcs.radec2pixelxy(ra, dec)
x,y = int(x),int(y)
os.system('imcopy %s"[%i:%i,%i:%i]" !/tmp/cut-%s' % (fpc, max(0, x-100), x+100, max(0, y-100), y+100, fpc))
os.system('an-fitstopnm -i /tmp/cut-%s -N 1150 -X 1400 | pnmtopng > cut-%s.png' % (fpc, fpc))
print('R,C,F', r,c,f)
print('x,y', x,y)
def OLD_radec_to_sdss_rcf(ra, dec, spherematch=True, radius=0, tablefn=None, contains=False):
# This file is generated by merging the files "dr7_e.fits", "dr7_g.fits", and "dr7_a.fits",
# whose construction is described in http://trac.astrometry.net/browser/trunk/projects/sdss-tests/README
# (and in comments below that I didn't notice before writing this)
if tablefn is None:
tablefn = find_data_file('dr7fields.fits')
sdss = table_fields(tablefn)
if sdss is None:
print('Failed to read table of SDSS fields from file', tablefn)
raise Exception('Failed to read table of SDSS fields from file: "' + str(tablefn) + '"')
sdssxyz = radectoxyz(sdss.ra, sdss.dec)
## HACK - magic 13x9 arcmin.
if radius == 0:
radius = sqrt(13.**2 + 9.**2)/2.
radius2 = arcmin2distsq(radius)
if not spherematch:
rcfs = []
for r,d in broadcast(ra,dec):
xyz = radectoxyz(r,d)
dist2s = sum((xyz - sdssxyz)**2, axis=1)
I = flatnonzero(dist2s < radius2)
if False:
print('I:', I)
print('fields:', sdss[I].run, sdss[I].field, sdss[I].camcol)
print('RA', sdss[I].ra)
print('Dec', sdss[I].dec)
rcfs.append(zip(sdss[I].run, sdss[I].camcol, sdss[I].field, sdss[I].ra, sdss[I].dec))
else:
from astrometry.libkd import spherematch
rds = array([x for x in broadcast(ra,dec)])
xyz = radectoxyz(rds[:,0], rds[:,1]).astype(double)
(inds,dists) = spherematch.match(xyz, sdssxyz, sqrt(radius2))
#print 'found %i matches' % len(inds)
if len(inds) == 0:
return []
#print 'inds:', inds.shape
I = np.argsort(dists[:,0])
#print 'dists:', dists.shape
inds = inds[I,:]
rcfs = [[] for i in range(len(rds))]
cols = sdss.columns()
gotem = False
if contains:
if 'ramin' in cols and 'ramax' in cols and 'decmin' in cols and 'decmax' in cols:
gotem = True
for i,j in inds:
(r,d) = rds[i]
if r >= sdss.ramin[j] and r <= sdss.ramax[j] and d >= sdss.decmin[j] and d <= sdss.decmax[j]:
rcfs[i].append((sdss.run[j], sdss.camcol[j], sdss.field[j], sdss.ra[j], sdss.dec[j]))
print('%i fields contain the first query RA,Dec' % len(rcfs[0]))
else:
print('you requested fields *containing* the query RA,Dec,')
print('but the fields list file \"%s\" doesn\'t contain RAMIN,RAMAX,DECMIN, and DECMAX columns' % tablefn)
if not gotem:
for i,j in inds:
rcfs[i].append((sdss.run[j], sdss.camcol[j], sdss.field[j], sdss.ra[j], sdss.dec[j]))
if isscalar(ra) and isscalar(dec):
return rcfs[0]
return rcfs
# parse RA,Dec. try: ra = float(args[0]) except ValueError: ra = hmsstring2ra(args[0]) try: dec = float(args[1]) except ValueError: dec = dmsstring2dec(args[1]) tablefn = None if opt.fields is not None: if os.path.exists(opt.fields): tablefn = opt.fields else: tablefn = find_data_file(opt.fields) if tablefn is None: print 'Failed to find list of fields:', opt.fields sys.exit(-1) # arcmin radius = opt.radius rcfs = radec_to_sdss_rcf(ra,dec,radius=radius, tablefn=tablefn, contains=opt.contains) print 'ra,dec', ra,dec print 'rcfs:', rcfs print for (r,c,f,ra1,dec1) in rcfs: print '%i %i %i (dist: %g arcmin)' % (r,c,f, deg2arcmin(degrees_between(ra,dec,ra1,dec1))) print for (r,c,f,ra1,dec1) in rcfs:
