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1 July 1990 Two-star photoelectric photometer
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel B. Caton and R. Lee Hawkins "Two-star photoelectric photometer", Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990);


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