NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Cryogenic infrared imaging beryllium telescope for Infrared Astronomical Satellite (IRAS)The IRAS mission is the result of an international project involving the cooperation of the U.S., the United Kingdom, and the Netherlands. The Infrared Astronmical Satellite was placed into orbit on January 25, 1983. Its main function is to provide a survey of the entire sky as viewed in four octaves of infrared radiation in the wavelenth region from 8 to 120 microns. The cylindrical structure of the satellite contains a large dewar vessel with 70 liters of superfluid helium. The helium has the function to maintain the contents of the vessel at 2.5 K for the duration of the mission. The IRAS optics is a Ritchey-Chretien telescope of 24 inches aperture. Because of the operational requirements of the mission, it had been specified that all optical components should be beryllium. Attention is given to the cold performance test conducted with IRAS, plans for future infrared telescopes, and reflectance limits.
Document ID
19850043202
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Devereux, W. P.
(Ball Corp. Ball Aerospace Systems Div., Boulder, CO, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1983
Subject Category
Astronomy
Accession Number
85A25353
Funding Number(s)
CONTRACT_GRANT: NAS2-9700
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available