Updated Status and Performance for the Cosmic Origins Spectrograph

Details Updated Status and Performance for the Cosmic Origins Spectrograph Updated Status and Performance for the Cosmic Origins Spectrograph

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21833101e&link_type=abstract

American Astronomical Society, AAS Meeting #218, #331.01; Bulletin of the American Astronomical Society, Vol. 43, 2011

Computer Science

Performance

Scientific paper

The Cosmic Origins Spectrograph (COS) was installed on the Hubble Space Telescope (HST) in May 2009. COS is designed to perform high-sensitivity, medium- and low-resolution spectroscopy of astronomical objects in the 1150-3200 Å wavelength range. COS significantly enhances the spectroscopic capabilities of HST at ultraviolet wavelengths, providing observers with unparalleled opportunities for observing faint sources of ultraviolet light. Provided here is an update on some aspects of detector performance and current calibration projects from the second half of Cycle 17 and through the first half of Cycle 18. Included are discussions on the analysis of gain sag and its effects, changes in the dark current and the time dependent sensitivity, and updates to the NUV and FUV flatfields.

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