Wide-field-of-view star tracker camera

Isabella T. Lewis; Arno G. Ledebuhr; Timothy S. Axelrod; Joseph F. Kordas; Robert Hills

doi:10.1117/12.45617

1 July 1991 Wide-field-of-view star tracker camera

Isabella T. Lewis, Arno G. Ledebuhr, Timothy S. Axelrod, Joseph F. Kordas, Robert Hills

Proceedings Volume 1478, Sensors and Sensor Systems for Guidance and Navigation; (1991) https://doi.org/10.1117/12.45617
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

A prototype wide-field-of-view (WFOV) star tracker camera has been fabricated and tested for use in spacecraft navigation. The most unique feature of this device is its 28 degree(s) X 44 degree(s) FOV, which views a large enough sector of the sky to ensure the existence of at least 5 stars of mv equals 4.5 or brighter in all viewing directions. The WFOV requirement and the need to maximize both collection aperture (F/1.28) and spectral input band (0.4 to 1.1 micrometers ) to meet the light gathering needs for the dimmest star have dictated the use of a novel concentric optical design, which employs a fiber optic faceplate field flattener. The main advantage of the WFOV configuration is the smaller star map required for position processing, which results in less processing power and faster matching. Additionally, a size and mass benefit is seen with a large FOV/smaller effective focal length (efl) sensor. Prototype hardware versions have included both image intensified and un-intensified CCD cameras. Integration times of

Citation Download Citation

Isabella T. Lewis, Arno G. Ledebuhr, Timothy S. Axelrod, Joseph F. Kordas, and Robert Hills "Wide-field-of-view star tracker camera", Proc. SPIE 1478, Sensors and Sensor Systems for Guidance and Navigation, (1 July 1991); https://doi.org/10.1117/12.45617

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