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defineobs

defineobs is a GUI application for creating or modifying observation definition files.

USAGEdefineobs [observset]
INPUTobservset.obsdef is an existing observation definition file
OUTPUTobservset.obsdef a new observation definition file
PARAMETERSnone


Details:

defineobs may be invoked with the name of an existing observation definition file, if one is to be modified, or with no filename. A GUI window is opened:

defineobs gui

The "Mask", "Dewar Offset File", "Grating Order", and "Grating Angle" boxes take typed input. "N&S" is an on-off button. The other boxes display menu selection when the left mouse button is clicked. The entries should be filled-in or modified from the top down: the choices for "Camera" depend on the setting for "Instrument", and the grating parameters depend on the settings for "Camera" and "Mode". If saving a file with the same name as an existing observation definition file, the existing file filename.obsdef is moved to filename.obsdef% before writing the new file.


defineobes also writes an additional parameter, D_ALIGNROT to the obsdef. D_ALIGNROT is the change of the ALIGNROT parameter in degrees, which is defined in the opticdef.dat for each grism. This parameter can be used to correct for rotations of a grism with respect to the CCD. It is mostly needed in LDSS3 data where the instrument can shift slightly.


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