Preliminary calibration results for the HST/cosmic origins spectrograph

Details Preliminary calibration results for the HST/cosmic origins spectrograph Preliminary calibration results for the HST/cosmic origins spectrograph

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.5164...93w&link_type=abstract

UV/EUV and Visible Space Instrumentation for Astronomy II. Edited by Siegmund, Oswald H. W. Proceedings of the SPIE, Volume 516

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the preliminary calibration results for the Cosmic Origins Spectrograph, a fourth generation replacement instrument for the Hubble Space Telescope due to be installed in mid-2005. The Cosmic Origins Spectrograph consists of two spectroscopic channels: a far ultraviolet channel that observes wavelengths between 1150 and 2000 Å and a near ultraviolet channel that observes between 1700 and 3200 Å. Each channel supports moderate (R≍20,000) and low (R≍2000) spectral resolution. We discuss the calibration methodology, test configurations, and preliminary end-to-end calibration results. This includes spectral resolution, system efficiency, flat fields, and wavelength scales for each channel. We also present the measured transmission of the Bright Object Aperture (BOA) and the measured spatial resolution.

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