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Cryogenic system for the Origins Space Telescope: cooling a large space telescope to 4K with today's technology
Author(s): M. DiPirro; L. Fantano; E. Canavan; D. Leisawitz; R. Carter; A. Florez; E. Amatucci
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Paper Abstract

The Origins Space Telescope (OST) concept is one of four NASA Science Mission Directorate, Astrophysics Division, observatory concepts being studied for launch in the mid 2030’s. OST’s wavelength coverage will be from the midinfrared to the sub-millimeter, 6-600 microns. To enable observations at the zodiacal background limit the telescope must be cooled to about 4 K. Combined with the telescope size (currently the primary is 9 m in diameter) this appears to be a daunting task. However, simple calculations and thermal modeling have shown the cooling power required is met with several currently developed cryocoolers. Further, the telescope thermal architecture is greatly simplified, allowing simpler models, more thermal margin, and higher confidence in the final performance values than previous cold observatories. We will describe design principles to simplify modeling and verification. We will argue that the OST architecture and design principles lower its integration and test time and reduce its ultimate cost.

Paper Details

Date Published: 5 September 2017
PDF: 9 pages
Proc. SPIE 10398, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII, 103980M (5 September 2017); doi: 10.1117/12.2275331
Show Author Affiliations
M. DiPirro, NASA Goddard Space Flight Ctr. (United States)
L. Fantano, NASA Goddard Space Flight Ctr. (United States)
E. Canavan, NASA Goddard Space Flight Ctr. (United States)
D. Leisawitz, NASA Goddard Space Flight Ctr. (United States)
R. Carter, NASA Goddard Space Flight Ctr. (United States)
A. Florez, NASA Goddard Space Flight Ctr. (United States)
E. Amatucci, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 10398:
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII
Howard A. MacEwen; James B. Breckinridge, Editor(s)

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