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Proceedings Paper

A pupil-scanning device for the measurement of sensor focus on large aperture tracking telescopes
Author(s): David A. Imrie; Stephen D. Fantone; Jian Zhang; Daniel Orband
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Paper Abstract

A system that accurately positions a 35mm film camera or HDTV sensor at the infinity focus image plane of a large-aperture tracking telescope in the field is described. A beam of collimated laser light is scanned across the entrance pupil of the telescope while tracking the movement of the centroid of the image formed at the sensor. In the case of an HDTV camera, the electronic signal is sampled directly, whereas for the 35mm film camera a secondary re-imaging system is employed to capture diffusely scattered light from the film surface.

Paper Details

Date Published: 26 November 2007
PDF: 8 pages
Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68300O (26 November 2007); doi: 10.1117/12.757858
Show Author Affiliations
David A. Imrie, Optikos Corp. (United States)
Stephen D. Fantone, Optikos Corp. (United States)
Jian Zhang, Optikos Corp. (United States)
Daniel Orband, Optikos Corp. (United States)


Published in SPIE Proceedings Vol. 6830:
Advanced Sensor Systems and Applications III
Yun-Jiang Rao; Yanbiao Liao; Gang-Ding Peng, Editor(s)

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