Multipurpose computer-controlled scanning photometer

Details Multipurpose computer-controlled scanning photometer Multipurpose computer-controlled scanning photometer

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8223520k&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Airglow, Astronomical Photometry, Light Emission, Photodiodes, Photometers, Photomultiplier Tubes, Computer Programs, Equipment Specifications, Night Sky, Numerical Control, Optical Filters, Sunlight

Scientific paper

A design for a multipurpose computer-controlled scanning photometer capable of measuring optical radiation ranging in intensity from the subvisual light levels associated with night sky airglow emissions to the intense flux levels of direct sunlight is discussed. The instrument has twelve interference filters for wavelength selection, a 2.50 field of view for nighttime observations, and a 1.50 field of view for daytime observations. A photomultiplier tube is used as the low light-level detector, and a silicon-PIN photodiode serves as the insolation detector. A particular measurement sequence is programmed into the instrument and can be modified by reading a cassette tape in the field. Normal operation is fully automatic.

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