Operating SIRTF for maximum lifetime

Charles R. Lawrence; Peter Eisenhardt; Jan G. Emming; Paul T. Finley; Thomas Nicholas Gautier III; George Helou; Richard A. Hopkins; Gregory B. Johnson; Jocelyn Keene; Johnny H. Kwok; Jeff H. Lee; Stephen J. Nieczkoski; Thomas L. Roellig; Russell B. Schweickart

doi:10.1117/12.461953

5 March 2003 Operating SIRTF for maximum lifetime

Charles R. Lawrence, Peter Eisenhardt, Jan G. Emming, Paul T. Finley, Thomas Nicholas Gautier III, George Helou, Richard A. Hopkins, Gregory B. Johnson, Jocelyn Keene, Johnny H. Kwok, Jeff H. Lee, Stephen J. Nieczkoski, Thomas L. Roellig, Russell B. Schweickart

Author Affiliations +

Proceedings Volume 4850, IR Space Telescopes and Instruments; (2003) https://doi.org/10.1117/12.461953
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The instruments of the Space Infrared Telescope Facility (SIRTF) are cooled directly by liquid helium, while the optical system is cooled by helium vapor. The greater the power dissipation into the liquid helium, the more vapor is produced, and the colder the telescope. Observations at shorter wavelengths do not require telescope temperatures as low as those required at shorter wavelengths. By taking advantage of this, it may be possible to extend the helium and mission lifetime by 10% or even 20%

Citation Download Citation

Charles R. Lawrence, Peter Eisenhardt, Jan G. Emming, Paul T. Finley, Thomas Nicholas Gautier III, George Helou, Richard A. Hopkins, Gregory B. Johnson, Jocelyn Keene, Johnny H. Kwok, Jeff H. Lee, Stephen J. Nieczkoski, Thomas L. Roellig, and Russell B. Schweickart "Operating SIRTF for maximum lifetime", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461953

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