Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phdt........51h&link_type=abstract
Thesis Tuebingen Univ. (Germany, F.R.). Inst. für Astronomie.
Astronomy and Astrophysics
Astronomy
Astronomical Photography, Balloon-Borne Instruments, Cameras, Product Development, X Ray Astronomy, Collimators, Microprocessors
Scientific paper
An optical navigation instrument (the optical rotation-modulation collimator, RMC) for nocturnal scientific balloon-borne observations in the hard X-ray domain, in the range between 20 and 180 keV was developed. A laboratory model of the optical detector, including a photodiode and a signal amplifier, was built; its functioning and sensitivity for the stellar camera were tested. The improved version was integrated in the RMC system, and the stellar camera was connected to a real-time microprocessor evaluation system. The stellar camera was tested by point-source simulation in the laboratory and by imaging of a star. An optoelectronic test setup was built for the simulation of the optical RMC and the optimization of the detector. A high-precision solar test setup was developed. Measurements are presented.
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