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#! /usr/bin/env python3
# This file is part of the Astrometry.net suite.
# Licensed under a 3-clause BSD style license - see LICENSE
from __future__ import print_function
from __future__ import absolute_import
from astrometry.util.fits import *
from astrometry.util.starutil_numpy import *
from astrometry.util.find_data_file import *
from os.path import basename,dirname
import numpy as np
def get_photoobj_filename(photoobjdir, rr, run, camcol, field):
fn = os.path.join(photoobjdir, rr, '%i'%run, '%i'%camcol,
'photoObj-%06i-%i-%04i.fits' % (run, camcol, field))
return fn
def read_photoobjs_in_wcs(wcs, margin, cols=None,
cutToPrimary=True,
wfn=None,
sdss=None):
'''
Read photoObjs that are inside the given 'wcs', plus 'margin' in degrees.
'''
import logging
log = logging.getLogger('read_photoobjs_in_wcs')
ra,dec = wcs.radec_center()
rad = wcs.radius()
rad += np.hypot(14., 10.) / 2 / 60.
# a little extra margin
rad += margin
if sdss is None:
from astrometry.sdss import DR9
sdss = DR9()
if wfn is None:
wfn = sdss.filenames.get('window_flist', None)
if wfn is None:
wfn = 'window_flist.fits'
if not os.path.exists(wfn):
print('File does not exist:', wfn, '; downloading...')
wfn = sdss.retrieve('window_flist', None, None, None, rerun='xxx')
print('Retrieved', wfn)
else:
print('Using', wfn)
print('Searching for run,camcol,fields with radius', rad, 'deg')
RCF = radec_to_sdss_rcf(ra, dec, radius=rad*60., tablefn=wfn)
log.debug('Found %i fields possibly in range' % len(RCF))
pixmargin = margin * 3600. / wcs.pixel_scale()
W,H = wcs.get_width(), wcs.get_height()
TT = []
for run,camcol,field,r,d in RCF:
log.debug('RCF %i/%i/%i' % (run, camcol, field))
rr = sdss.get_rerun(run, field=field)
if rr in [None, '157']:
log.debug('Rerun 157')
continue
fn = sdss.retrieve('photoObj', run, camcol, field, rerun=rr)
#fn = get_photoobj_filename(rr, run, camcol, field)
T = fits_table(fn, columns=cols)
if T is None:
log.debug('read 0 from %s' % fn)
continue
log.debug('read %i from %s' % (len(T), fn))
# while we're reading it, record its length for later...
#get_photoobj_length(rr, run, camcol, field)
ok,x,y = wcs.radec2pixelxy(T.ra, T.dec)
x -= 1
y -= 1
T.cut((x > -pixmargin) * (x < (W + pixmargin)) *
(y > -pixmargin) * (y < (H + pixmargin)))
if cutToPrimary:
T.cut((T.resolve_status & 256) > 0)
log.debug('cut to %i within target area and PRIMARY.' % len(T))
else:
log.debug('cut to %i within target area.' % len(T))
if len(T) == 0:
continue
TT.append(T)
if not len(TT):
return None
T = merge_tables(TT)
return T
class RaDecToRcf(object):
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 __call__(self, ra, dec, spherematch=True, radius=0, contains=False):
T = self.tab
# HACK - magic 13x9 +1 arcmin.
if radius == 0:
radius = sqrt(14.**2 + 10.**2)/2.
d2 = arcmin2distsq(radius)
if self.sdssxyz is None:
self.sdssxyz = radectoxyz(T.ra, T.dec)
if not spherematch:
rcfs = []
for r,d in broadcast(ra,dec):
xyz = radectoxyz(r,d)
dist2s = sum((xyz - self.sdssxyz)**2, axis=1)
I = flatnonzero(dist2s < d2)
rcfs.append(zip(T[I].run, T[I].camcol,
T[I].field, T[I].ra, T[I].dec))
else:
from astrometry.libkd import spherematch
if self.kd is None:
self.kd = spherematch.tree_build(self.sdssxyz)
rds = array([x for x in broadcast(ra,dec)])
xyz = radectoxyz(rds[:,0], rds[:,1]).astype(double)
kd2 = spherematch.tree_build(xyz)
notself = False
inds,D = spherematch.trees_match(self.kd, kd2, np.sqrt(d2),
notself=notself, permuted=True)
if len(inds) == 0:
return []
I = np.argsort(D[:,0])
inds = inds[I]
rcfs = [[] for i in range(len(rds))]
cols = T.columns()
gotem = False
if contains:
if ('ramin' in cols and 'ramax' in cols and
'decmin' in cols and 'decmax' in cols):
gotem = True
for j,i in inds:
(r,d) = rds[i]
if (r >= T.ramin[j] and r <= T.ramax[j]
and d >= T.decmin[j] and d <= T.decmax[j]):
rcfs[i].append((T.run[j], T.camcol[j],
T.field[j], T.ra[j], T.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 j,i in inds:
rcfs[i].append((T.run[j], T.camcol[j], T.field[j],
T.ra[j], T.dec[j]))
if isscalar(ra) and isscalar(dec):
return rcfs[0]
return rcfs
# RA,Dec are either scalars or iterables.
# Radius is in *arcmin*. sigh.
# If scalars, returns a list of (run, camcol, field, ra, dec) tuples, one for each matching field.
# If iterable, returns a list containing one list per query (ra,dec) of the same tuple.
def radec_to_sdss_rcf(ra, dec, spherematch=True, radius=0, tablefn=None, contains=False):
RD = RaDecToRcf(tablefn=tablefn)
return RD(ra, dec, spherematch=spherematch, radius=radius, contains=contains)
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
# The field list was created starting with dstn's list of fields in DR7:
# fitscopy dr7_e.fits"[col RUN;FIELD;CAMCOL;RA=(RAMIN+RAMAX)/2;DEC=(DECMIN+DECMAX)/2]" e.fits
# fitscopy dr7_g.fits"[col RUN;FIELD;CAMCOL;RA=(RAMIN+RAMAX)/2;DEC=(DECMIN+DECMAX)/2]" g.fits
# fitscopy dr7_a.fits"[col RUN;FIELD;CAMCOL;RA=(RAMIN+RAMAX)/2;DEC=(DECMIN+DECMAX)/2]" a.fits
# tabmerge g.fits e.fits
# tabmerge g.fits+1 e.fits+1
# tabmerge a.fits+1 e.fits+1
# mv e.fits dr7fields.fits
# rm g.fits a.fits
'''
cd ~/sdss-tests
casjobs.py $SDSS_CAS_USER $SDSS_CAS_PASS querywait @dr7_ngood.sql
casjobs.py $SDSS_CAS_USER $SDSS_CAS_PASS querywait @dr7_ngood2.sql
casjobs.py $SDSS_CAS_USER $SDSS_CAS_PASS outputdownloaddelete mydb.goodfields2 /tmp/dr7.fits
fitscopy /tmp/dr7.fits"[col RA=(ramin+ramax)/2;DEC=(decmin+decmax)/2;run;field;camcol;ngood;ramin;ramax;decmin;decmax]" dr7fields.fits
casjobs.py $SDSS_CAS_USER $SDSS_CAS_PASS querywait @s82_ngood.sql
# Stripe82 has no RunQA table.
casjobs.py $SDSS_CAS_USER $SDSS_CAS_PASS querywait @s82_ngood2.sql
casjobs.py $SDSS_CAS_USER $SDSS_CAS_PASS outputdownloaddelete mydb.s82goodfields2 s82.fits
fitscopy s82.fits"[col RA=(ramin+ramax)/2;DEC=(decmin+decmax)/2;run;field;camcol;ngood;ramin;ramax;decmin;decmax]" s82fields.fits
'''
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)
if __name__ == '__main__':
main()
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