Instrument Information
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| IDENTIFIER |
urn:nasa:pds:context:instrument:dushanbe.rcc.sanglok::1.1
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| NAME |
Sanglok Observatory Photometer-Polarimeter
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| TYPE |
Polarimeter
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| DESCRIPTION |
The single-channel photometer-polarimeter at Sanglok Observatory was built at the Institute of Astrophysics of Tadjik Academy of Sciences. It allowed quasi-simultaneous photometric and polarimetric observations. The useble wavelength range was 0.35-0.75 microns. The polarimeter worked on the modulation principle with a rapidly-rotating polarizer as the analyzer. The rotation frequency of the polarizer was about 33 revolutions per second. Four impulse counters were used to registrate impulses during each quarter of a polarizer revolution. The total number of impulses in four positions of the polarizer allow the derivation of the values of the Stokes Q and U parameters and hence the value of the degree of linear polarization and the position angle. The observing procedure included consecutive measurements of an object and a sky background near the object with the same diaphragm. To control the stability of instrument operation the measurements of a built-in signal generator were used. For more information, see Kayumov V.V., Kiselev N.N., Pushnin P.A., Rakhimov V.Yu., Siklitskij V.I., Tarasov K.V., Chernova G.P., Yakutovich V.N. The investigation of the photometer-polarimeter of the 1-m RCC telescope. Bull. Inst. Astrophyz. Tadjik Acad. Sci No. 78, p. 10-16, 1989 (in Russian).
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| REFERENCES |
Kayumov V.V., N.N. Kiselev, P.A. Pushnin, V.Yu. Rakhimov, V.I. Siklitskij, K.V.Tarasov, G.P. Chernova, and V.N. Yakutovich, The investigation of thephotometer-polarimeter of the 1-m RCC telescope. Bull. Inst. Astrophyz. Tadjik Acad.Sci. No. 78, p. 10-16 (in Russian), 1989.
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