Infrared Telescope On Spacelab 2

D Koch; G. G. Fazio; w. A. Traub; G. H. Rieke; T. N. Gautier; W. F. Hoffmann; F. J. Low; W. Poteet; E. W. Urban; L. Katz

doi:10.1117/12.7972874

1 February 1982 Infrared Telescope On Spacelab 2

D Koch, G. G. Fazio, w. A. Traub, G. H. Rieke, T. N. Gautier, W. F. Hoffmann, F. J. Low, W. Poteet, E. W. Urban, L. Katz

Author Affiliations +

Optical Engineering, Vol. 21, Issue 1, 211141 (February 1982). https://doi.org/10.1117/12.7972874

Abstract

The infrared telescope (IRT) on Spacelab 2 will be the first cryogenically cooled telescope operated from the Orbiter. The principal objectives, consistent with those of the second Spacelab mission, are to measure the induced environment about the Orbiter and to demonstrate the ability to manage a large volume of superfluid helium in space. The prime astrophysical objectives are to map extended sources of low surface brightness infrared emission, including the zodiacal light, the galactic plane, and extragalactic regions. The IRT consists of a 250 liter helium dewar and an articulated cryostat containing the telescope, which scans ±45 degrees about a single axis orthogonal to both the local vertical and the Orbiter pitch axis. The telescope is an f/4 15.2 cm highly baffled Herschelian telescope cooled to 8 K, which may scan to within 35 degrees of the sun. The focal plane cooled to 3 K consists of nine discrete photoconductors covering a wavelength interval of 4.5 to 120 microns in five bands. Each detector has a 0.6 X 1.0 degree field of view. A single 2 micron stellar detector is used for aspect determination. A cold shutter provides a zero flux reference. Overlapping scans, contiguous orbits, and a six degree per second scan rate permit rapid redundant coverage of 60% of the sky.

Citation Download Citation

D Koch, G. G. Fazio, w. A. Traub, G. H. Rieke, T. N. Gautier, W. F. Hoffmann, F. J. Low, W. Poteet, E. W. Urban, and L. Katz "Infrared Telescope On Spacelab 2," Optical Engineering 21(1), 211141 (1 February 1982). https://doi.org/10.1117/12.7972874

Published: 1 February 1982

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