PGPLOTnot setup correctly.
FIBCALroutine requires the
PGPLOTlibrary to be linked correctly to the
CIRPASS IRAFtasks. Depending on how the users system is set up this can be complex. To circumvent the problem, one can suppress
PGPLOTand write a test file to fit.txt be answering no to the question
IRAF> View the 1st set of peaks found, text output otherwise? (yes)
MOSAIC_IFU :The input list for this task is a list of files.
@listformat that many
IDISPLAY :Little black spots
IDISPLAYhas a current limitation in that it doesn't fill all the pixels in the output image prolery so you get a number of little black dots in the image. It is purely a display problem, which has a fix involving a recompile of the software at the momnet.
FIBCAL :Profile widths
EPARable option in this routine is the width of the fiber profiles on the detector. This number is writen into the fiebr position file and is used by
DOTARGETduring optimal extraction. You need to check it is set to the correct current value (2 pixels during August 2002?) and not some other random value. The effect of having this number wrong is not fully known yet.
MOSAIC_IFU :Floating point divide by zero.
SCOMBINEif you try to use rejjection while mosaicing the data. Turn off rejection for now until we get to the bottom of this.
BLKREP :Makeing 2D images from spectra.
BLKREPrefused to make 2D iamges out of 1D spectra. Use
IMSTACKto make a 2 spectrum 2D image and them
BLKREPthat. Try something like :
imstack im1.fits,im1.fits im2.fits
blkrep im2.fits im2.fits 1 254
CIRPASS exposure times :Expressing exposure times for CIRPASS
CIRPASStasks. Care must be taken by the user to ensure that they record the correct exposure time after summation, median combination and averaging of spectra.
The problem is primarily caused by the need to used the
MAKMEF task(s) to convert between
CIRPASS data formats and will be fixed as the data
reduction process is formalized.
Details of the non standard
FITS header keywords
that are currently propagated can be found at :
In summary :
EXP_TIME in extension  in seconds
SAMPTIME in any [sci,n]
extension. These are both milli seconds.