General description: The gimg files are produced the guider camera. These used to be stored with raw spectro data in subdirectories like spectro/MJD/guider. Presently those are now stored separately in the gcam directory. These are simple 16-bit FITS images. This file describes the old guider camera. For the current guider camera see gcam files.
Naming convention: gimg[DDDD].fits, The four digits look like some kind of timestamp but bear no resemblance to the times in the headers. Probably they are simply a sequence number.
Approximate size: 201600 bytes.
File type: FITS
Read by products: ???
Written by products: ???
Sample Header:
SIMPLE = T BITPIX = 16 NAXIS = 2 NAXIS1 = 384 NAXIS2 = 256 BSCALE = 1 BZERO = 32768 BEGX = 0 /Starting x index of subregion BEGY = 0 /Starting y index of subregion FULLX = 768 /Full, unbinned x size of image FULLY = 512 /Full, unbinned y size of image BINX = 2 /X binning factor BINY = 2 /Y binning factor EXPTIME = 15 /Exposure time of image CAMNAME = 'SenSys ' /Camera used for this image CAMID = 6 /ID number of camera for this image CAMTEMP = 10 /Camera temperature (in C) UTTIME = '04:29:55' /UT Time CCD was read UTDATE = '2005/07/08' /UT Date CCD was read END