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Stray Light Suppression in the Goddard IRAM 2-Millimeter Observer (GISMO)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.
Document ID
20120015640
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
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)
Date Acquired
August 26, 2013
Publication Date
July 1, 2012
Subject Category
Instrumentation And Photography
Report/Patent Number
GSFC.CPR.7081.2012
Meeting Information
Meeting: SPIE Astronomical Telescopes and Instrumentation 2012
Location: Amsterdam
Country: Netherlands
Start Date: July 1, 2012
End Date: July 6, 2012
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Public Use Permitted.
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