A pupil-scanning device for the measurement of sensor focus on large aperture tracking telescopes

David A. Imrie; Stephen D. Fantone; Jian Zhang; Daniel Orband

doi:10.1117/12.757858

26 November 2007 A pupil-scanning device for the measurement of sensor focus on large-aperture tracking telescopes

David A. Imrie, Stephen D. Fantone, Jian Zhang, Daniel Orband

Author Affiliations +

Proceedings Volume 6830, Advanced Sensor Systems and Applications III; 68300O (2007) https://doi.org/10.1117/12.757858
Event: Photonics Asia 2007, 2007, Beijing, China

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.

Citation Download Citation

David A. Imrie, Stephen D. Fantone, Jian Zhang, and Daniel Orband "A pupil-scanning device for the measurement of sensor focus on large-aperture tracking telescopes", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68300O (26 November 2007); https://doi.org/10.1117/12.757858

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