ipre: INGRID image pre-processing

ipre will process eiter one file and store as a new image, or process a series of files and replace their contents.
ipre will automatically do post-pre if the input file contains two frames, dark image subtraction if a dark image file is specified and flat field normalisation if a flat-field image is given.
Additional processing options include -Z for positivity (set all negative pixels to zero), and -C for cosmic ray/hot pixel removal. The invocation can be:
> ipre [-d dark.fits] [-f flat.fits] [-Z] [-C] input.fits output.fits

or to replace a number of files:
> ipre -r [-d dark.fits] [-f flat.fits] [-Z] [-C] r*.fit

© 2002 Isaac Newton Group of Telescopes
Developed by Roy Østensen