Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21641304a&link_type=abstract
American Astronomical Society, AAS Meeting #216, #413.04; Bulletin of the American Astronomical Society, Vol. 41, p.823
Astronomy and Astrophysics
Astronomy
Scientific paper
After the Cosmic Origins Spectrograph (COS) was installed onboard the Hubble Space Telescope (HST) in May 2009, it underwent an extensive calibration and characterization check-out during the Servicing Mission Observatory Verification (SMOV) period. The results from this program were used to update reference files and make changes to CALCOS, the COS data processing software. Improvements to the standard data products will be discussed. For the FUV channel, pulse-height filtering has been turned on to reduce background features. Modifications to the flat field correction were started and are expected be improved incrementally as more data are analyzed. For the NUV channel, vignetting corrections have been optimized for each grating. For both channels, improvements were made in the wavelength scales, flux calibration, and data quality flagging. Additional data are included in the FITS products to allow users to perform customized processing. Long-term plans for future improvements will be presented.
Ake Thomas B.
Aloisi Alessandra
Béland Stephane
Burgh Eric
Diaz Rafael
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