A highly accurate method of absolute calibration of photoelectric apparatus in a wide spectral region

Details A highly accurate method of absolute calibration of photoelectric apparatus in a wide spectral region A highly accurate method of absolute calibration of photoelectric apparatus in a wide spectral region

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sva....23..112t&link_type=abstract

(Astronomicheskii Zhurnal, vol. 56, no. 1, 1979, p. 205-212.) Soviet Astronomy, vol. 23, Jan.-Feb. 1979, p. 112-116. Translatio

Mathematics

Spectral Theory

1

Astronomical Photometry, Calibrating, Electrophotometers, Spectral Energy Distribution, Spectral Theory, Telescopes, Diffusers, Electric Current, Error Analysis, Light Sources, Luminous Intensity, Screen Effect, Temperature Scales

Scientific paper

A calibration technique that uses a diffuser illuminated by an auxiliary light source is described which was developed to determine the spectral energy density of illumination at the entrance pupil of a telescope-spectrophotometer system. The spectral energy density of diffuser luminosity, which is required for calculations, is measured by direct comparison with the spectral energy density of the luminosity of a low-temperature standard light source (an absolutely black body at the melting point of gold or a tungsten ribbon-filament lamp). It is shown that the errors in the spectral energy density of diffuser luminosity consist only of errors in the spectral energy density of the standard-source luminosity (about 0.2% to 0.5%) plus errors in the photoelectric luminosity comparison (about 0.1% to 0.2%) and do not exceed 0.3% to 0.6%.

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