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Proceedings Paper

Bias selecting in TEXES electronics
Author(s): Andrew J. Kruger; Matthew J. Richter; John H. Lacy; Britt Holbrook
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Paper Abstract

TEXES is a high resolution mid-infrared spectrograph acting as a visiting instrument at the NASA IRTF and Gemini North telescopes. Switching from high (R=100,000) to medium resolution (R=15,000), the noise becomes detector dominated due to charge cascades in the low-background detector. This is remedied by lowering the bias voltage across the detector, a problem during observing runs as it requires manual adjustment within the electronics. To save telescope time, a bias selector has been created to allow the bias voltage to be switched from the control room between four options. The options were chosen based upon signal to noise vs. bias voltage testing.

Paper Details

Date Published: 9 July 2008
PDF: 8 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70146Q (9 July 2008); doi: 10.1117/12.789242
Show Author Affiliations
Andrew J. Kruger, Univ. of California, Davis (United States)
Matthew J. Richter, Univ. of California, Davis (United States)
John H. Lacy, Univ. of Texas at Austin (United States)
Britt Holbrook, Univ. of California, Davis (United States)

Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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