Solar sensor subsystems alignment check using solar scans for the Halogen Occultation Experiment

Details Solar sensor subsystems alignment check using solar scans for the Halogen Occultation Experiment Solar sensor subsystems alignment check using solar scans for the Halogen Occultation Experiment

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1157...17j&link_type=abstract

IN: Infrared technology XV; Proceedings of the Meeting, San Diego, CA, Aug. 7-9, 1989 (A90-44129 19-35). Bellingham, WA, Society

Physics

Halogen Occultation Experiment, Solar Sensors, Infrared Scanners, Remote Sensing

Scientific paper

The alignment of a dual-axes sun sensor subsystem to a telescope having a multiple sensor subsystem is described. The sun sensor consists of two analog and one digital silicon detectors. The analog detectors are shadow mask type operating in the visible spectrum. The detectors are mounted for azimuth and elevation positioning of biaxial gimbals. The digital detector is a linear diode array that operates at a spectral position of 0.7 micron and is used for elevation positioning. The position signals correspond to relative angles between the sun sensor and the solar disk. These three detectors are aligned on an Invar structure which is mounted to a Cassegrain telescope. This telescope relays solar radiance to an eight channel detector subsystem operating in the infrared range from 2 to 10 microns. The test technique and results to check the boresight alignment of these two subsystems by scanning the solar disk will be reported. The boresight alignment for both the azimuth and elevation axes of the two detector subsystems is verified using this technique.

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