def get_observedCoordinates(self):
"""
convert mean coordinates in the International Celestial Reference Frame
to observed coordinates
"""
ra = self.column_by_name('raJ2000')
dec = self.column_by_name('decJ2000')
return _observedFromICRS(ra, dec, obs_metadata=self.obs_metadata, epoch=self.db_obj.epoch)
def observedStellarCoordinates(self, includeRefraction = True):
"""
Getter which converts mean coordinates in the International Celestial
Reference Frame to observed coordinates.
"""
#TODO
#are we going to store proper motion in raw radians per year
#or in sky motion = cos(dec) * (radians per year)
#PAL asks for radians per year inputs
pr = self.column_by_name('properMotionRa') #in radians per year
pd = self.column_by_name('properMotionDec') #in radians per year
px = self.column_by_name('parallax') #in radians
rv = self.column_by_name('radialVelocity') #in km/s; positive if receding
ra = self.column_by_name('raJ2000')
dec = self.column_by_name('decJ2000')
return _observedFromICRS(ra, dec, pm_ra = pr, pm_dec = pd, parallax = px, v_rad = rv,
includeRefraction = includeRefraction, obs_metadata=self.obs_metadata,
epoch=self.db_obj.epoch)
def get_phoSimCoordinates(self):
ra = self.column_by_name('raJ2000')
dec = self.column_by_name('decJ2000')
return _observedFromICRS(ra, dec, includeRefraction = False, obs_metadata=self.obs_metadata,
epoch=self.db_obj.epoch)
