Statistics – Applications
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982s%26w....21..481w&link_type=abstract
Sterne und Weltraum, vol. 21, Nov. 1982, p. 481-484. In German.
Statistics
Applications
Astronomical Photometry, Electrophotometers, Microprocessors, Numerical Control, Costs, Photomultiplier Tubes, Steering, Systems Engineering, Telescopes
Scientific paper
The present investigation is concerned with electronic problems which arise in connection with the design of a photoelectric photometer for astronomical applications. A photomultiplier (SE, secondary electron multiplier) is used as a detector. The employment of an SE as a detector has a number of advantages compared to the use of a photodiode. A description is presented of the approaches used to provide suitable amplification, taking into account the selection of the principle of amplification, the characteristics of the ideal integrator, operational relations for the actual integrator, the selection of an operational amplifier at a suitable price for an amateur, and directions for the practical construction of the amplifying device. The extension of the considered minimum configuration for the photometer to a microprocessor-controlled system is also discussed, and attention is given to cost considerations and the employment of the described photometer in connection with a 75-cm mirror telescope of a German observatory.
Hopp Ulrich
Witzigmann S.
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