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Proceedings Paper

A new deep-depletion CCD for the red channel of the Palomar Double Spectrograph
Author(s): Gustavo Rahmer; Roger M. Smith; Khanh Bui; Evan Kirby; Richard Dekany; Ernest Croner; Jennifer Milburn
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Paper Abstract

The red channel of the Palomar Double Spectrograph (DBSP) on the 200-inch Hale Telescope has been upgraded with a new deep-depletion CCD from LBNL. Its redder response produced a significant increase of the throughput above 550 nm, and its longer dimension more than doubled the spectral coverage. A special Dewar was designed to accommodate a detector mount which includes features to minimize CCD motion due to thermal cycling, in spite of the very simple "picture frame" packaging of the CCD. The new Dewar also includes some novel features to improve the liquid nitrogen hold time while staying within the size envelope allowed in the Cassegrain cage. We describe these changes along with the detector characterization.

Paper Details

Date Published: 24 September 2012
PDF: 9 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84462Z (24 September 2012); doi: 10.1117/12.926687
Show Author Affiliations
Gustavo Rahmer, Caltech Optical Observatories (United States)
Large Binocular Telescope Observatory (United States)
Roger M. Smith, Caltech Optical Observatories (United States)
Khanh Bui, Caltech Optical Observatories (United States)
Evan Kirby, Caltech Optical Observatories (United States)
Richard Dekany, Caltech Optical Observatories (United States)
Ernest Croner, Caltech Optical Observatories (United States)
Jennifer Milburn, Caltech Optical Observatories (United States)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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