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| Availability | Summary | Proposing | Observing | Documentation | Tools |
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| Availability | Summary | Proposing | Observing | Documentation | Tools |
FIBCAL :
PGPLOT not setup correctly.FIBCAL
routine requires the PGPLOT library to be linked
correctly to the CIRPASS IRAF tasks. Depending on how
the users system is set up this can be complex. To circumvent the
problem, one can suppress PGPLOT and 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)
See Identifying the calibration fibers in the Cookbook for more details.
MOSAIC_IFU :
The input list for this task is a list of files.@list format that many IRAF uses.
IDISPLAY : Little black spotsIDISPLAY has 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 widthsEPARable 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 DOTARGET during
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.SCOMBINE if 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.BLKREP refused to make 2D iamges out of 1D spectra. Use
IMSTACK to make a 2 spectrum 2D image and them
BLKREP that. Try something like : imstack im1.fits,im1.fits im2.fitsblkrep im2.fits im2.fits 1 254
CIRPASS exposure times : Expressing exposure times for
CIRPASSIRAF and CIRPASS tasks. 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 IRAF and
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 :
http://www.ast.cam.ac.uk/~optics/cirpass/docs/keywords.html
In summary :
EXP_TIME in extension [0] in seconds
TIME_OBS and SAMPTIME in any [sci,n]
extension. These are both milli seconds.