map-spectra
calculates
the mapping between science plane (wavelength and slit coordinate) and
ccd focal plane for a given observation set.
USAGE
map-spectra observset
INPUT
observset.obsdefname
of an existing observation definition file
OUTPUT
observset.map is
a file with the mapping information
PARAMETERS
lambda0
minimum wavelength
lambda1
maximum wavelength
minpixl
minimum number of pixels of spectrum on a
chip
disorder
order of fit to dispersion
sagorder
order of fit to spectrum curvature
tiltorder
order of fit to slit tilt
sagitorder
order of fit to slit curvature
slenorder
order of fit to slit scale changes
Details
Suggested fit order: 5-6 for dispersion and spectrum curvature, 3 for
other terms. minpixl
allows
one to discard very short spectrum segments if desired.