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Stray Light Suppression in the Goddard IRAM 2-Millimeter Observer (GISMO)
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Author and Affiliation:
Sharp, E. H.(Global Science and Technology, Inc., Greenbelt, MD, United States);
Benford, D. J.(NASA Goddard Space Flight Center, Greenbelt, MD, United States);
Fixsen, D. J.(NASA Goddard Space Flight Center, Greenbelt, MD, United States);
Moseley, S. H.(NASA Goddard Space Flight Center, Greenbelt, MD, United States);
Staguhn, J. G.(NASA Goddard Space Flight Center, Greenbelt, MD, United States);
Wollack, E. J.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Abstract: The Goddard-IRAM Superconducting 2 Millimeter Observer (GISMO) is an 8xl6 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 Millimetrique (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.
Publication Date: Jul 01, 2012
Document ID:
20120015640
(Acquired Nov 14, 2012)
Subject Category: INSTRUMENTATION AND PHOTOGRAPHY
Report/Patent Number: GSFC.CPR.7081.2012
Document Type: Conference Paper
Meeting Information: SPIE Astronomical Telescopes and Instrumentation 2012; 1-6 Jul. 2012; Amsterdam; Netherlands
Meeting Sponsor: International Society for Optical Engineering; United States
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 8p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: ASTRONOMY; BOLOMETERS; CAMERAS; CRYOSTATS; MILLIMETER WAVES; OPTICAL MEASURING INSTRUMENTS; RECEIVERS; SUPERCONDUCTIVITY; TELESCOPES
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