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Proceedings Paper

Stray light suppression in the Goddard IRAM 2-Millimeter Observer (GISMO)
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Paper Abstract

The Goddard-IRAM Superconducting 2 Millimeter Observer (GISMO) is an 8x16 Transition Edge Sensor (TES) array of bolometers built as a pathfinder for TES detector development efforts at NASA Goddard Space Flight Center. GISMO has been used annually at the Institut de Radioastronomie Millimétrique (IRAM) 30 meter telescope since 2007 under engineering time and was opened in the spring of 2012 to the general astronomical community. The spring deployment provided an opportunity to modify elements of the room temperature optics before moving the instrument to its new permanent position in the telescope receiver cabin. This allowed for the possibility to extend the cryostat, introduce improved cold baffling and thus further optimize the stray light performance for final astronomical use of the instrument, which has been completed and validated. We will demonstrate and discuss several of the methods used to quantify and limit the influence of stray light in the GISMO camera.

Paper Details

Date Published: 24 September 2012
PDF: 8 pages
Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84523I (24 September 2012); doi: 10.1117/12.926828
Show Author Affiliations
E. H. Sharp, Global Science & Technology, Inc. (United States)
NASA Goddard Space Flight Ctr. (United States)
D. J. Benford, NASA Goddard Space Flight Ctr. (United States)
D. J. Fixsen, Univ. of Maryland, College Park (United States)
NASA Goddard Space Flight Ctr. (United States)
S. H. Moseley, NASA Goddard Space Flight Ctr. (United States)
J. G. Staguhn, Johns Hopkins Univ. (United States)
NASA Goddard Space Flight Ctr. (United States)
E. J. Wollack, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 8452:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI
Wayne S. Holland, Editor(s)

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