stitch combines
2-amplifier or 4-amplifier LDSS3 data into single-chip format,
simultaneously removing bias and making approximate corrections for
differing amplifier gains.
USAGE
stitch
framename
INPUT
framenamecn.fits
are
the set of image files to be combined
OUTPUT
framename.fits is
the combined frame.
PARAMETERS
gain1
relative gain (e-/adu) of amplifier 1
...
...
gain4
relative gain (e-/adu) of amplifier 4
dewar
the relevant ccd configuration: LDSS3-2 or
LDSS3-4
bias
name of bias file to used, or "none"
Details:
Stitch
makes bias and gain corrections in the same way as does biasflat.
The COSMOS pipeline expects LDSS3 data to be in 1-amplifier, 1 FITS
file form, so stitch must be used before any other processing of LDSS3
files is performed. Note, that the IRAF routine lstitch is NOT
an acceptable alternative to stitch: lstitch
using an inferior IRAF method of bias correction and does not combine
data in the same orientation as does stitch.