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stcube is a very fast command that allows to perform basic statistics computation over many images, in a single command-line order: stcube *.fits.

stcube will return the min, max, mean, standard deviation, energy and absolute flux for all planes of all files given on the command-line. It works extremely fast, also for big images.

The median finder (stcube -m) is also very efficient, and useful to get an estimate of the background value in images of e.g. crowded fields.

stcube man page

Nicolas Devillard 2002-04-01