Gemini North Multi-Object Spectrograph (GMOS-N) Interim CCDs Upgrade: Commissioning Results II

Details Gemini North Multi-Object Spectrograph (GMOS-N) Interim CCDs Upgrade: Commissioning Results II Gemini North Multi-Object Spectrograph (GMOS-N) Interim CCDs Upgrade: Commissioning Results II

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942218r&link_type=abstract

American Astronomical Society, AAS Meeting #219, #422.18

Astronomy and Astrophysics

Astronomy

Scientific paper

The GMOS-N instrument was upgraded with new e2v deep-depletion devices in November 2011. The new detectors extend and improve the sensitivity at both ends of the optical spectrum by factors of up to 1.45 in the blue and > 2 longward of 850 nm. These CCDs, being deep-depletion devices, are significantly thicker than the original CCDs and produce spectral images affected much less by fringing. This provides a significantly improved sky subtraction at long wavelengths, which is dominated by a dense population of atmospheric emission lines. We present commissioning results including detector characteristics, spectroscopic throughputs, cosmic ray rates, nod & shuffle dark features, and spectral PSFs.

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