STScI Logo

Hubble Space Telescope
COS Data Handbook v3.0 release

A new version of the COS Data Handbook (v3.0) has been released and is available here:

The Data Handbook contains full details of the calcos reduction pipeline and the various COS data file types, as well as examples of data reduction strategies. It differs from the Instrument Handbook, which remains the primary reference for the preparation of COS observations.

The new version contains many updates from v2.0, including a description of the new TWOZONE extraction algorithm for FUV data taken at Lifetime Position 3.