A filter-tilting type nightglow photometer using a small GaAs photocathode and aspheric lenses

Details A filter-tilting type nightglow photometer using a small GaAs photocathode and aspheric lenses A filter-tilting type nightglow photometer using a small GaAs photocathode and aspheric lenses

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976risrj..30..103m&link_type=abstract

Report of Ionosphere and Space Research in Japan, vol. 30, no. 3-4, Dec. 1976, p. 103-107.

Physics

Optics

Nightglow, Photometers, Semiconductor Devices, Asphericity, Gallium Arsenides, Lenses, Luminous Intensity, Oxygen Spectra, Photocathodes, Photomultiplier Tubes

Scientific paper

A filter-tilting type nightglow photometer using a photomultiplier RCA-C31034A with a small GaAs photocathode area has been constructed. This GaAs photocathode shows a nearly flat spectral response from 2200 A to 9000 A and is ideal for a simultaneous nightglow observation over a wide range of wavelengths (2200 A to 9000 A). The optics of the photometer consists of three aspheric lenses designed specially for this photocathode. A sample airglow record obtained with this photometer is presented. The record compares the simultaneous intensities of the forbidden OI 5577 A with the P and R branches of A2 (0-1) band at 8645 A.

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