Spectrophotometry with television-type detectors

Details Spectrophotometry with television-type detectors Spectrophotometry with television-type detectors

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jrasc..71..139w&link_type=abstract

Journal of the Royal Astronomical Society of Canada, vol. 71, Apr. 1977, p. 139-151.

Astronomy and Astrophysics

Astronomy

5

H Alpha Line, Radiation Detectors, Stellar Spectrophotometry, Telescopes, Computer Techniques, Data Acquisition, High Resolution, Matrices (Circuits), Photographic Plates, Solid State Devices, Television Cameras

Scientific paper

Spectrophotometric properties of detection systems incorporating multichannel multiplexed TV type detectors are reviewed, with special attention given to reproduction of the quality of high-resolution photographs. The detection systems utilize low-light-level TV cameras or solid-state detector arrays, with data acquisition by minicomputers. While the number of spectral elements covered is less than in the case of photographic plates, advantages of enhanced sensitivity, linear response, broad dynamic range, and prompt display are pointed out. Some disadvantages include: positional instability (when an electron reading beam is used), high thermal current, high readout noise, no ultraviolet sensitivity; measures to cope with the problems are discussed.

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