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Proceedings Paper

Predicted optical performance of the high-altitude balloon experiment (HABE) telescope in an adverse thermal environment
Author(s): Ronald L. Akau; Richard C. Givler; Daniel R. Eastman
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Paper Abstract

The High-Altitude Balloon Experiment telescope was designed to operate at an ambient temperature of -55 degree(s)C and an altitude of 26 km, using a precooled primary mirror. Although at this altitude the air density is only 1.4 percent of the value at sea level, the temperature gradients within the telescope are high enough to deform the optical wavefront. This problem is considerably lessened by precooling the primary mirror to -35 degree(s)C. This paper describes the application of several codes to determine the range of wavefront deformation during a mission.

Paper Details

Date Published: 5 July 1994
PDF: 18 pages
Proc. SPIE 2221, Acquisition, Tracking, and Pointing VIII, (5 July 1994); doi: 10.1117/12.178973
Show Author Affiliations
Ronald L. Akau, Sandia National Labs. (United States)
Richard C. Givler, Sandia National Labs. (United States)
Daniel R. Eastman, Logicon R&D Associates (United States)


Published in SPIE Proceedings Vol. 2221:
Acquisition, Tracking, and Pointing VIII
Michael K. Masten; Larry A. Stockum; Morris M. Birnbaum; George E. Sevaston, Editor(s)

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