IRAF file extension

ofwolf42 wrote on Mar 04, 2011

When using CCDops v5, images are saved as *.FIT images. Although DS9 can open these images without complication, IRAF doesn't open them unless I change the extension to *.fit (all lowercase). Is this supposed to happen and is there any way to change CCDops to save as *.fit or get IRAF to open *.FIT?

Just to be explicit, the error I get when I attempt to display::

ecl>display AutoGrab001.FIT
ERROR: Cannot open image (AutoGrab001.FIT)

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Mike Fitzpatrick wrote on Mar 04, 2011

IRAF uses the 'imextn' environment variable to associate file extensions to a particular type of image (DS9 actually opens the image to read it). You can uncomment the definition from your login.cl file to add "FIT" as a valid extension for the 'fxf' FITS kernel, or you can simply rename the files with a command such as

cl> rename *.FIT fits field=extn

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Last post on Mar 04, 2011