Subtract a Constant from FITS or IRAF images
subtracts a constant from a specified pixel in a FITS or IRAF image. The image may be overwritten or a new image created.
Command Line Arguments
Name of IRAF image header file or FITS file. This must be present.
x y value
Image coordinate and value to be subtracted. This must be present.
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Write the output to a new file which is named by inserting an
before the file extension. The new file is always written to the current working directory.
Last updated 17 September 2003 by