Converting a liquid nitrogen-cooled camera to closed-cycle cooling

Tom Benedict; Jeff Ward; Gregory Barrick

doi:10.1117/12.858178

15 July 2010 Converting a liquid nitrogen-cooled camera to closed-cycle cooling

Tom Benedict, Jeff Ward, Gregory Barrick

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 77352M (2010) https://doi.org/10.1117/12.858178
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

The detector for the ESPaDOnS spectrograph at the Canada-France-Hawaii Telescope (CFHT) is a CCD42-90 4.5kx2k CCD from e2v Industries in a liquid nitrogen cooled GL Scientific cryostat. This paper describes the conversion of this camera to closed-cycle cooling using a Polycold® cryogenic refrigeration system. Topics covered include vibration analysis, positional stability of the image plane, cool-down characteristics, PLC integration, and annual operational overheads for both systems.

Citation Download Citation

Tom Benedict, Jeff Ward, and Gregory Barrick "Converting a liquid nitrogen-cooled camera to closed-cycle cooling", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77352M (15 July 2010); https://doi.org/10.1117/12.858178

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