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Proceedings Paper

MSTI-3 sensor package optical design
Author(s): Richard F. Horton; William G. Baker; Michael Griggs; Van Nguyen; H. Vernon Baker
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Paper Abstract

The MSTI-3 sensor package is a three band imaging telescope for military and dual use sensing missions. The MSTI-3 mission is one of the Air Force Phillips Laboratory's Pegasus launched space missions, a third in the series of state-of-the-art lightweight sensors on low cost satellites. The satellite is planned for launch into a 425 Km orbit in late 1995. The MSTI- 3 satellite is configured with a down looking two axis gimbal and gimbal mirror. The gimbal mirror is an approximately 13 cm by 29 cm mirror which allows a field of regard approximately 100 degrees by 180 degrees. The optical train uses several novel optical features to allow for compactness and light weight. A 105 mm Ritchey Chretien Cassegrain imaging system with a CaF2 dome astigmatism corrector is followed by a CaF2 beamsplitter cube assembly at the systems first focus. The dichroic beamsplitter cube assembly separates the light into a visible and two IR channels of approximately 2.5 to 3.3, (SWIR), and 3.5 to 4.5, (MWIR), micron wavelength bands. The two IR imaging channels each consist of unity power re-imaging lens cluster, a cooled seven position filter wheel, a cooled Lyot stop and an Amber 256 X 256 InSb array camera. The visible channel uses a unity power re- imaging system prior to a linear variable filter with a Sony CCD array, which allows for a multispectral imaging capability in the 0.5 to 0.8 micron region. The telescope field of view is 1.4 degrees square.

Paper Details

Date Published: 2 June 1995
PDF: 22 pages
Proc. SPIE 2478, Space Telescopes and Instruments, (2 June 1995); doi: 10.1117/12.210913
Show Author Affiliations
Richard F. Horton, Science Applications International Corp. (United States)
William G. Baker, Science Applications International Corp. (United States)
Michael Griggs, Science Applications International Corp. (United States)
Van Nguyen, Science Applications International Corp. (United States)
H. Vernon Baker, Air Force Phillips Lab. (United States)


Published in SPIE Proceedings Vol. 2478:
Space Telescopes and Instruments
Pierre Y. Bely; James B. Breckinridge, Editor(s)

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