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Hubble Space Telescope
COS Analysis Software

COS Software Tools

This page contains links to various software tools having applications to COS data.

Software for analyzing COS data


the IRAF package containing CALCOS, which is used to process COS data. STSDAS Help Pages.


"On the fly reprocessing". Requests for COS data from the HST Archive always return data reprocessed with the current version of CALCOS and the best available reference files. In most cases it is easier to let the OTFR pipeline reprocess data for you. If standard pipeline processing is inadequate, however, CALCOS may be downloaded and run locally.