IRAF parameters: in_image = "" Name of input image dqfc_image = "" Name of output DQF image imlist = "" List of DQF images mode = "q") Þ GBADPIX - Applies the combined DQF mask image to the SExtractor segmentation image Command : gbadrd/rdpix segimage imagedqf IRAF parameters: seg_image = "gssf12w2t_m.fits" Name of segmentation image bad_image = "gssf12w2t_dqf.fits" Name of bad pixel image badflag = -2. Bad pixel flag value mode = "q" Note : Parameter badflag should always be set to -2 since this is the bad pixel flag recognized by GIMFIT2D. Extracting Galaxy Images with XGAL Þ Extracts a thumbnail image around each object from the science image, the segmentation image and the sigma image (optional) to be analyzed by GIMFIT2D. Command : xgal image segimage objects.xgal sig_image where image = Science image segimage = Segmentation image objects.xgal = Name of the file produced by GSCRIPTER with objects (X,Y) and postage image size. sig_image = Sigma image (optional) Þ XGAL subtracts the local sky value measured by SExtractor.
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