def computeRoundAperCorrFromPSF(self,
radii,
useLookupTable=True,
display=True,
displayAperture=True):
"""
This computes the aperture correction directly from the PSF. These vaules will be used for interpolation to
other values. The aperture correction is with respect tothe largest aperture provided in radii. I recommend
4*FWHM.
radii is an array of radii on which to calculate the aperture corrections. I recommend at least 10 values
between 1 and 4 FWHM.
useLookupTable=True/False to calculate either with just the moffat profile, or with lookuptable included.
display=True to show you some plots.
displayAperture=True to show you the aperture at each radius.
"""
self.aperCorrRadii = radii * 1.0
aperCorrs = []
(A, B) = self.PSF.shape
if useLookupTable:
phot = pillPhot(self.fullPSF, repFact=1)
else:
phot = pillPhot(self.PSF, repFact=1)
"""
#old individual radii call version
for iii in range(len(self.aperCorrRadii)):
r=radii[iii]
width=A/2#int(A/(r*self.repFact*2)+0.5)*0.75
phot(B/2.,A/2.,radius=r*self.repFact,l=0.,a=0.,skyRadius=None,zpt=0.0,width=width,display=displayAperture)
m=phot.magnitude
aperCorrs.append(m)
"""
#more efficient version with all radii passed at once.
width = A / 2
phot(B / 2.,
A / 2.,
radius=radii * self.repFact,
l=0.,
a=0.,
skyRadius=None,
zpt=0.0,
width=width,
display=displayAperture)
aperCorrs = phot.magnitude
self.aperCorrs = np.array(aperCorrs)
self.aperCorrFunc = interp.interp1d(self.aperCorrRadii * 1.,
self.aperCorrs * 1.)
if display:
fig = pyl.figure('psf')
pyl.plot(self.aperCorrRadii, self.aperCorrs, 'k-o')
pyl.xlabel('Aperture Radius (pix')
pyl.ylabel('Normalized Magnitude')
pyl.show()
def computeLineAperCorrFromTSF(self,radii,l,a,display=True,displayAperture=True):
"""
This computes the aperture correction directly from the TSF. These vaules will be used for interpolation to
other values. The aperture correction is with respect tothe largest aperture provided in radii. I recommend
4*FWHM.
radii is an array of radii on which to calculate the aperture corrections. I recommend at least 10 values
between 1 and 4 FWHM.
l and a are the length (in pixels) and angle of the pill aperture
useLookupTable=True/False to calculate either with just the moffat profile, or with lookuptable included.
display=True to show you some plots.
displayAperture=True to show you the aperture at each radius.
"""
self.lineAperCorrRadii=radii*1.0
self.lineAperCorrs=[]
(A,B)=self.PSF.shape
phot=pillPhot(self.longPSF,repFact=1)
for ii in range(len(self.lineAperCorrRadii)):
r=self.lineAperCorrRadii[ii]
width=A/2#int(A/(r*self.repFact*2))
phot(B/2.,A/2.,radius=r*self.repFact,l=l*self.repFact,a=a,skyRadius=None,zpt=0.0,width=width,display=displayAperture)
m=phot.magnitude
print ' ',r,phot.sourceFlux,m
self.lineAperCorrs.append(m)
self.lineAperCorrs=num.array(self.lineAperCorrs)
self.lineAperCorrFunc=interp.interp1d(self.lineAperCorrRadii,self.lineAperCorrs)
if display:
fig=pyl.figure('psf')
pyl.plot(self.lineAperCorrRadii,self.lineAperCorrs,'k-o')
pyl.xlabel('Aperture Radius (pix')
pyl.ylabel('Normalized Magnitude')
pyl.show()
def computeRoundAperCorrFromPSF(self,radii,useLookupTable=True,display=True,displayAperture=True):
"""
This computes the aperture correction directly from the PSF. These vaules will be used for interpolation to
other values. The aperture correction is with respect tothe largest aperture provided in radii. I recommend
4*FWHM.
radii is an array of radii on which to calculate the aperture corrections. I recommend at least 10 values
between 1 and 4 FWHM.
useLookupTable=True/False to calculate either with just the moffat profile, or with lookuptable included.
display=True to show you some plots.
displayAperture=True to show you the aperture at each radius.
"""
self.aperCorrRadii=radii*1.0
aperCorrs=[]
(A,B)=self.PSF.shape
if useLookupTable:
phot=pillPhot(self.fullPSF,repFact=1)
else:
phot=pillPhot(self.PSF,repFact=1)
"""
#old individual radii call version
for iii in range(len(self.aperCorrRadii)):
r=radii[iii]
width=A/2#int(A/(r*self.repFact*2)+0.5)*0.75
phot(B/2.,A/2.,radius=r*self.repFact,l=0.,a=0.,skyRadius=None,zpt=0.0,width=width,display=displayAperture)
m=phot.magnitude
aperCorrs.append(m)
"""
#more efficient version with all radii passed at once.
width=A/2
phot(B / 2., A / 2., radius=radii * self.repFact, l=0., a=0., skyRadius=None, zpt=0.0, width=width,
display=displayAperture)
aperCorrs = phot.magnitude
self.aperCorrs=num.array(aperCorrs)
self.aperCorrFunc=interp.interp1d(self.aperCorrRadii*1.,self.aperCorrs*1.)
if display:
fig=pyl.figure('psf')
pyl.plot(self.aperCorrRadii,self.aperCorrs,'k-o')
pyl.xlabel('Aperture Radius (pix')
pyl.ylabel('Normalized Magnitude')
pyl.show()
def computeLineAperCorrFromTSF(self,
radii,
l,
a,
display=True,
displayAperture=True):
"""
This computes the aperture correction directly from the TSF. These vaules will be used for interpolation to
other values. The aperture correction is with respect tothe largest aperture provided in radii. I recommend
4*FWHM.
radii is an array of radii on which to calculate the aperture corrections. I recommend at least 10 values
between 1 and 4 FWHM.
l and a are the length (in pixels) and angle of the pill aperture
useLookupTable=True/False to calculate either with just the moffat profile, or with lookuptable included.
display=True to show you some plots.
displayAperture=True to show you the aperture at each radius.
"""
self.lineAperCorrRadii = radii * 1.0
self.lineAperCorrs = []
(A, B) = self.PSF.shape
phot = pillPhot(self.longPSF, repFact=1)
"""
#old version where all radii are passed individually
for ii in range(len(self.lineAperCorrRadii)):
r=self.lineAperCorrRadii[ii]
width=A/2#int(A/(r*self.repFact*2))
phot(B/2.,A/2.,radius=r*self.repFact,l=l*self.repFact,a=a,skyRadius=None,zpt=0.0,width=width,display=displayAperture)
m=phot.magnitude
print ' ',r,phot.sourceFlux,m
self.lineAperCorrs.append(m)
"""
#new version where all radii are passed at once
width = A / 2
phot(B / 2.,
A / 2.,
radius=radii * self.repFact,
l=l * self.repFact,
a=a,
skyRadius=None,
zpt=0.0,
width=width,
display=displayAperture)
fluxes = phot.sourceFlux
self.lineAperCorrs = phot.magnitude
print " Radius Flux Magnitude"
for ii in range(len(self.lineAperCorrRadii)):
print ' {:6.2f} {:10.3f} {:8.3f}'.format(
radii[ii], phot.sourceFlux[ii], phot.magnitude[ii])
self.lineAperCorrs = np.array(self.lineAperCorrs)
self.lineAperCorrFunc = interp.interp1d(self.lineAperCorrRadii,
self.lineAperCorrs)
if display:
fig = pyl.figure('psf')
pyl.plot(self.lineAperCorrRadii, self.lineAperCorrs, 'k-o')
pyl.xlabel('Aperture Radius (pix')
pyl.ylabel('Normalized Magnitude')
pyl.show()