CSUB-Subtracts a continuum from 2 dimensional data

Description:

A polynomial is fitted to the continuum and this is subtracted. As with VIG, lines can be excluded from the polynomial fitting. CSUB stores the polynomial fitting coefficients in the actual data file.

Parameters:

IMAGE

IMAGE = FILE (Read) Name of image for input

OLD

OLD = LOGICAL (Read) Old coefficients are to be used for correction

OUTPUT

OUTPUT = FILE (Write) Name of output file OUTPUT is the name of the resulting spectrum. If OUTPUT is the same as INPUT the data in the input file will be modified in situ. Otherwise a new file will be created.

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