The STScI STIS Pipeline V: Cosmic Ray Rejection

Details The STScI STIS Pipeline V: Cosmic Ray Rejection The STScI STIS Pipeline V: Cosmic Ray Rejection

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996stis.rept...18b&link_type=abstract

Instrument Science Report STIS 96-018, 11 pages

Physics

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

Scientific paper

In this ISR we describe calstis-2, the calstis calibration module which combines CRSPLIT exposures to produce a single cosmic ray rejected image. Cosmic ray rejection in the STIS pipeline will follow the same basic philosophy as does the STSDAS task crrej - a series of separate CRSPLIT exposures are combined to produce a single summed image, where discrepant (different by some number of sigma from the guess value) are discarded in forming the output image. The calstis pipeline is able to perform this cosmic ray rejection because the individually commanded exposures are associated together into a single dataset by TRANS and generic conversion. The crrej will also exist as a task in STSDAS to allow users to reperform the cosmic ray rejection, altering the input parameters.

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