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from __future__ import absolute_import, division, print_function
class InstrWCS(object):
"""
A base class for instrument specific keyword definition.
It prvides a default implementation (modeled by ACS) for
all set_kw methods.
"""
def __init__(self, hdr0=None, hdr=None):
self.exthdr = hdr
self.primhdr = hdr0
self.set_ins_spec_kw()
def set_ins_spec_kw(self):
"""
This method MUST call all set_kw methods.
There should be a set_kw method for all kw listed in
mappings.ins_spec_kw. TypeError handles the case when
fobj='DEFAULT'.
"""
self.set_idctab()
self.set_offtab()
self.set_date_obs()
self.set_ra_targ()
self.set_dec_targ()
self.set_pav3()
self.set_detector()
self.set_filter1()
self.set_filter2()
self.set_vafactor()
self.set_naxis1()
self.set_naxis2()
self.set_ltv1()
self.set_ltv2()
self.set_binned()
self.set_chip()
self.set_parity()
def set_idctab(self):
try:
self.idctab = self.primhdr['IDCTAB']
except (KeyError, TypeError):
self.idctab = None
def set_offtab(self):
try:
self.offtab = self.primhdr['OFFTAB']
except (KeyError, TypeError):
self.offtab = None
def set_date_obs(self):
try:
self.date_obs = self.primhdr['DATE-OBS']
except (KeyError, TypeError):
self.date_obs = None
def set_ra_targ(self):
try:
self.ra_targ = self.primhdr['RA-TARG']
except (KeyError, TypeError):
self.ra_targ = None
def set_dec_targ(self):
try:
self.dec_targ = self.primhdr['DEC-TARG']
except (KeyError, TypeError):
self.dec_targ = None
def set_pav3(self):
try:
self.pav3 = self.primhdr['PA_V3']
except (KeyError, TypeError):
self.pav3 = None
def set_filter1(self):
try:
self.filter1 = self.primhdr['FILTER1']
except (KeyError, TypeError):
self.filter1 = None
def set_filter2(self):
try:
self.filter2 = self.primhdr['FILTER2']
except (KeyError, TypeError):
self.filter2 = None
def set_vafactor(self):
try:
self.vafactor = self.exthdr['VAFACTOR']
except (KeyError, TypeError):
self.vafactor = 1
def set_naxis1(self):
try:
self.naxis1 = self.exthdr['naxis1']
except (KeyError, TypeError):
try:
self.naxis1 = self.exthdr['npix1']
except (KeyError, TypeError):
self.naxis1 = None
def set_naxis2(self):
try:
self.naxis2 = self.exthdr['naxis2']
except (KeyError, TypeError):
try:
self.naxis2 = self.exthdr['npix2']
except (KeyError, TypeError):
self.naxis2 = None
def set_ltv1(self):
try:
self.ltv1 = self.exthdr['LTV1']
except (KeyError, TypeError):
self.ltv1 = 0.0
def set_ltv2(self):
try:
self.ltv2 = self.exthdr['LTV2']
except (KeyError, TypeError):
self.ltv2 = 0.0
def set_binned(self):
try:
self.binned = self.exthdr['BINAXIS1']
except (KeyError, TypeError):
self.binned = 1
def set_chip(self):
try:
self.chip = self.exthdr['CCDCHIP']
except (KeyError, TypeError):
self.chip = 1
def set_parity(self):
self.parity = [[1.0, 0.0], [0.0, -1.0]]
def set_detector(self):
# each instrument has a different kw for detector and it can be
# in a different header, so this is to be handled by the instrument classes
self.detector = 'DEFAULT'
class ACSWCS(InstrWCS):
"""
get instrument specific kw
"""
def __init__(self, hdr0, hdr):
self.primhdr = hdr0
self.exthdr = hdr
InstrWCS.__init__(self, hdr0, hdr)
self.set_ins_spec_kw()
def set_detector(self):
try:
self.detector = self.primhdr['DETECTOR']
except KeyError:
print('ERROR: Detector kw not found.\n')
raise
def set_parity(self):
parity = {'WFC': [[1.0, 0.0], [0.0, -1.0]],
'HRC': [[-1.0, 0.0], [0.0, 1.0]],
'SBC': [[-1.0, 0.0], [0.0, 1.0]]}
if self.detector not in list(parity.keys()):
parity = InstrWCS.set_parity(self)
else:
self.parity = parity[self.detector]
class WFPC2WCS(InstrWCS):
def __init__(self, hdr0, hdr):
self.primhdr = hdr0
self.exthdr = hdr
InstrWCS.__init__(self, hdr0, hdr)
self.set_ins_spec_kw()
def set_filter1(self):
self.filter1 = self.primhdr.get('FILTNAM1', None)
if self.filter1 == " " or self.filter1 is None:
self.filter1 = 'CLEAR1'
def set_filter2(self):
self.filter2 = self.primhdr.get('FILTNAM2', None)
if self.filter2 == " " or self.filter2 is None:
self.filter2 = 'CLEAR2'
def set_binned(self):
mode = self.primhdr.get('MODE', 1)
if mode == 'FULL':
self.binned = 1
elif mode == 'AREA':
self.binned = 2
def set_chip(self):
self.chip = self.exthdr.get('DETECTOR', 1)
def set_parity(self):
self.parity = [[-1.0, 0.], [0., 1.0]]
def set_detector(self):
try:
self.detector = self.exthdr['DETECTOR']
except KeyError:
print('ERROR: Detector kw not found.\n')
raise
class WFC3WCS(InstrWCS):
"""
Create a WFC3 detector specific class
"""
def __init__(self, hdr0, hdr):
self.primhdr = hdr0
self.exthdr = hdr
InstrWCS.__init__(self, hdr0, hdr)
self.set_ins_spec_kw()
def set_detector(self):
try:
self.detector = self.primhdr['DETECTOR']
except KeyError:
print('ERROR: Detector kw not found.\n')
raise
def set_filter1(self):
self.filter1 = self.primhdr.get('FILTER', None)
if self.filter1 == " " or self.filter1 is None:
self.filter1 = 'CLEAR'
def set_filter2(self):
# Nicmos idc tables do not allow 2 filters.
self.filter2 = 'CLEAR'
def set_parity(self):
parity = {'UVIS': [[-1.0, 0.0], [0.0, 1.0]],
'IR': [[-1.0, 0.0], [0.0, 1.0]]}
if self.detector not in list(parity.keys()):
parity = InstrWCS.set_parity(self)
else:
self.parity = parity[self.detector]
class NICMOSWCS(InstrWCS):
"""
Create a NICMOS specific class
"""
def __init__(self, hdr0, hdr):
self.primhdr = hdr0
self.exthdr = hdr
InstrWCS.__init__(self, hdr0, hdr)
self.set_ins_spec_kw()
def set_parity(self):
self.parity = [[-1.0, 0.], [0., 1.0]]
def set_filter1(self):
self.filter1 = self.primhdr.get('FILTER', None)
if self.filter1 == " " or self.filter1 is None:
self.filter1 = 'CLEAR'
def set_filter2(self):
# Nicmos idc tables do not allow 2 filters.
self.filter2 = 'CLEAR'
def set_chip(self):
self.chip = self.detector
def set_detector(self):
try:
self.detector = self.primhdr['CAMERA']
except KeyError:
print('ERROR: Detector kw not found.\n')
raise
class STISWCS(InstrWCS):
"""
A STIS specific class
"""
def __init__(self, hdr0, hdr):
self.primhdr = hdr0
self.exthdr = hdr
InstrWCS.__init__(self, hdr0, hdr)
self.set_ins_spec_kw()
def set_parity(self):
self.parity = [[-1.0, 0.], [0., 1.0]]
def set_filter1(self):
self.filter1 = self.exthdr.get('OPT_ELEM', None)
if self.filter1 == " " or self.filter1 is None:
self.filter1 = 'CLEAR1'
def set_filter2(self):
self.filter2 = self.exthdr.get('FILTER', None)
if self.filter2 == " " or self.filter2 is None:
self.filter2 = 'CLEAR2'
def set_detector(self):
try:
self.detector = self.primhdr['DETECTOR']
except KeyError:
print('ERROR: Detector kw not found.\n')
raise
def set_date_obs(self):
try:
self.date_obs = self.exthdr['DATE-OBS']
except (KeyError, TypeError):
self.date_obs = None
|
