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Previous: Flatfielding
Up: Spectrum extraction and calibration
Next: Using the Extract command
Previous Page: Flatfielding
Next Page: ARC command interface
This is a separate subpackage which can be entered by the command ARC. It provides facilities for mapping an arc image to create an arc table, and hence derive scrunch coefficients.
A BOXES list must be provided to give details of the positions of the slit locations. If an ARCL list is present, containing details of the arc-lines, it is used; otherwise one is created and modified.