Creation and Testing Procedures for STIS CCD Bias Reference Files

Details Creation and Testing Procedures for STIS CCD Bias Reference Files Creation and Testing Procedures for STIS CCD Bias Reference Files

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999stis.rept....8g&link_type=abstract

STIS Instrument Science Report 99-08, 13 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Stis, Space Telescope Imaging Spectrograph

Scientific paper

We describe the procedures that are (and have been) used to create STIS CCD Bias Reference files during HST Observing Cycles 7 and 8, as well as the testing procedures that are performed by the STIS team prior to delivering the Bias Reference files to the operational HST/STIS pipeline system (OPUS) and the HST archive. Currently (i.e., in HST Cycle 8) , Bias Reference files in the nominal CCDGAIN=1, unbinned mode are delivered weekly, while less oftenly used modes (CCDGAIN=1: 1x2 binning, 2x1 binning, 2x2 binning; CCDGAIN=4: 1x1 binning) are delivered biweekly. This high delivery frequency of Bias Reference files is needed to ensure a proper correction for the changing number and location of hot columns.

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