Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978opmep..45....3s&link_type=abstract
(Optiko-Mekhanicheskaia Promyshlennost', vol. 45, Oct. 1978, p. 3, 4.) Soviet Journal of Optical Technology, vol. 45, Oct. 1978,
Astronomy and Astrophysics
Astronomy
Astrometry, Infrared Astronomy, Stellar Spectrophotometry, Stellar Temperature, Low Temperature, Nomographs, Pattern Recognition, Signal To Noise Ratios
Scientific paper
This paper suggests that low-temperature stars can be distinguished from high-temperature stars by using a two-channel IR detector that operates simultaneously in two different spectral regions. Calculations are performed for the case where an uncooled PbS photoresistor is used in the first channel and an InSb photoresistor cooled to 90 K is employed in the second channel. It is shown that a plot of the stellar-temperature dependence of the S/N ratios in the two channels of the IR detector divides all stars into two classes, viz., those with temperatures above and below 3000 K, and that this boundary can be plotted for any temperature as a function of the problem to be solved
Pianko T. A.
Safronov Iu. P.
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