map-spectra
map-spectra
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
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| INPUT | observset.obsdef name of an existing observation definition file
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| OUTPUT | observset.map is a file with the mapping information
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| PARAMETERS |
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Details:
minpixl allows one to discard very short spectrum segments if desired. map-spectra does not map slits when an end of the slit falls off the edge of the
CCD. Slits that are not mapped because an insufficient number of pixels are
entirely on one or more CCDs are reported when the program exits. You must set
use_holes to "y" if you intend to use the alignment stars during the extraction
in extract-2dspec.
If you are working with a subset of data that consists of 4 chips, you can also change chipnum to 4 instead of 8, in order for later programs to work
with the output map file. This was a recent, but temporary, fix for subsets of data and currently works only if you have the subset chips 1-4.