A two-star photoelectric photometer

Details A two-star photoelectric photometer A two-star photoelectric photometer

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1235..786c&link_type=abstract

IN: Instrumentation in astronomy VII; Proceedings of the Meeting, Tucson, AZ, Feb. 13-17, 1990 (A91-29601 11-35). Bellingham, WA

Physics

Optics

Electrophotometers, Focal Plane Devices, Design Analysis, Electronic Equipment, Fiber Optics

Scientific paper

A three-detector photoelectric photometer system being developed for use on the 46-cm telescope (and on a planned 80-cm telescope) at the Appalachian State University Dark Sky Observatory is described. One (PIN-diode) detector is used to obtain sky brightness, while the other two can be aligned for simultaneous observations of two objects by adjusting the separation and position angle with stepper motors. Fiber-optic image conduits mounted beside the detectors feed a CCD video camera, permitting field acquisition and microcomputer-based control of the stepping motors from the observatory warm room. Consideration is given to the full-field filter system, the detector characteristics, the data-acquisition and control electronics, and the control software. Plans call for initial testing on the telescope in 1990 and operational status in 1991.

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