Cryogenic system for the Origins Space Telescope: cooling a large space telescope to 4K with today's technology

M. DiPirro; L. Fantano; E. Canavan; D. Leisawitz; R. Carter; A. Florez; E. Amatucci

doi:10.1117/12.2275331

5 September 2017 Cryogenic system for the Origins Space Telescope: cooling a large space telescope to 4K with today's technology

M. DiPirro, L. Fantano, E. Canavan, D. Leisawitz, R. Carter, A. Florez, E. Amatucci

Author Affiliations +

Proceedings Volume 10398, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII; 103980M (2017) https://doi.org/10.1117/12.2275331
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

M. DiPirro, L. Fantano, E. Canavan, D. Leisawitz, R. Carter, A. Florez, and E. Amatucci "Cryogenic system for the Origins Space Telescope: cooling a large space telescope to 4K with today's technology", Proc. SPIE 10398, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII, 103980M (5 September 2017); https://doi.org/10.1117/12.2275331

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available