def __init__(self, filename):
"""
Initialize SpotGridPSF from input file
See specter.psf.PSF for futher details
"""
#- Use PSF class to Load Generic PSF values (x, y, wavelength, ...)
PSF.__init__(self, filename)
#- Load extensions specific to this PSF type
fx = fits.open(filename, memmap=False)
self._spots = fx['SPOTS'].data #- PSF spots
# self._spotx = fx['SPOTX'].data #- X location of spots
# self._spoty = fx['SPOTY'].data #- Y location of spots
self._fiberpos = fx['FIBERPOS'].data #- Location of fibers on slit
self._spotpos = fx['SPOTPOS'].data #- Slit loc of sampled spots
self._spotwave = fx['SPOTWAVE'].data #- Wavelengths of spots
#- 2D linerar interpolators
pp = self._spotpos
ww = self._spotwave
self._fspot = LinearInterp2D(pp, ww, self._spots)
# self._fx = LinearInterp2D(pp, ww, self._spotx)
# self._fy = LinearInterp2D(pp, ww, self._spoty)
#- Read spot vs. CCD pixel scales from header
hdr = fx[0].header
self.CcdPixelSize = hdr['CCDPIXSZ'] #- CCD pixel size in mm
self.SpotPixelSize = hdr['PIXSIZE'] #- Spot pixel size in mm
fx.close()
def __init__(self, filename):
"""
Initialize SpotGridPSF from input file
See specter.psf.PSF for futher details
"""
#- Use PSF class to Load Generic PSF values (x, y, wavelength, ...)
PSF.__init__(self, filename)
#- Load extensions specific to this PSF type
fx = fits.open(filename, memmap=False)
self._spots = fx['SPOTS'].data #- PSF spots
# self._spotx = fx['SPOTX'].data #- X location of spots
# self._spoty = fx['SPOTY'].data #- Y location of spots
self._fiberpos = fx['FIBERPOS'].data #- Location of fibers on slit
self._spotpos = fx['SPOTPOS'].data #- Slit loc of sampled spots
self._spotwave = fx['SPOTWAVE'].data #- Wavelengths of spots
#- 2D linerar interpolators
pp = self._spotpos
ww = self._spotwave
self._fspot = LinearInterp2D(pp, ww, self._spots)
# self._fx = LinearInterp2D(pp, ww, self._spotx)
# self._fy = LinearInterp2D(pp, ww, self._spoty)
#- Read spot vs. CCD pixel scales from header
hdr = fx[0].header
self.CcdPixelSize = hdr['CCDPIXSZ'] #- CCD pixel size in mm
self.SpotPixelSize = hdr['PIXSIZE'] #- Spot pixel size in mm
fx.close()
def __init__(self, filename):
"""
Loads pixelated PSF parameters from a fits file
"""
#- Use PSF class to Load Generic PSF values (x, y, wavelength, ...)
PSF.__init__(self, filename)
#- Additional headers are a custom format for the pixelated psf
fx = fits.open(filename, memmap=False)
self.nexp = fx[3].data.view(np.ndarray) #- icoeff xexp yexp
self.xyscale = fx[4].data.view(np.ndarray) #- ifiber igroup x0 xscale y0 yscale
self.psfimage = fx[5].data.view(np.ndarray) #- [igroup, icoeff, iy, ix]
fx.close()
def __init__(self, filename):
"""
Loads pixelated PSF parameters from a fits file
"""
#- Use PSF class to Load Generic PSF values (x, y, wavelength, ...)
PSF.__init__(self, filename)
#- Additional headers are a custom format for the pixelated psf
fx = fits.open(filename, memmap=False)
self.nexp = fx[3].data.view(np.ndarray) #- icoeff xexp yexp
self.xyscale = fx[4].data.view(
np.ndarray) #- ifiber igroup x0 xscale y0 yscale
self.psfimage = fx[5].data.view(
np.ndarray) #- [igroup, icoeff, iy, ix]
fx.close()
def __init__(self, filename, spot=None, scale=1.0):
"""
Initialize MonoSpotPSF from input file with optional override of
which spot[y,x] to use. If overriding spot, scale gives ratio of
spot pixel-size to CCD pixel-size. Must be >1 and evenly divisible
by spot dimensions.
See specter.psf.PSF for futher details
"""
#- Use PSF class to Load Generic PSF values (x, y, wavelength, ...)
PSF.__init__(self, filename)
if spot is None:
self._spot = fits.getdata(filename, 'SPOT')
self._scale = fits.getheader(filename, 'SPOT')['SCALE']
else:
self._spot = spot.copy()
self._scale = scale
def __init__(self, filename, spot=None, scale=1.0):
"""
Initialize MonoSpotPSF from input file with optional override of
which spot[y,x] to use. If overriding spot, scale gives ratio of
spot pixel-size to CCD pixel-size. Must be >1 and evenly divisible
by spot dimensions.
See specter.psf.PSF for futher details
"""
#- Use PSF class to Load Generic PSF values (x, y, wavelength, ...)
PSF.__init__(self, filename)
if spot is None:
self._spot = fits.getdata(filename, 'SPOT')
self._scale = fits.getheader(filename, 'SPOT')['SCALE']
else:
self._spot = spot.copy()
self._scale = scale