CATALOG KVARATSKHELIA OF EXTREME VALUES OF THE DEGREE OF POLARIZATION FOR 100 ARES OF THE LUNAR SURFACE

  • O.I. KVARATSKHELIA E. Kharadze National Astrophysical Observatory

Abstract

At the Abastumani Astrophysical Observatory, for 10 years (1976-1985), polarimetric observations of 100 areas of the lunar surface. The observations (with 40 cm refractor) were carried out with interference filters with the following effective wavelengths: 0.415 µm (half-width of transmission 0.017 µm); 0.433(0.009); 0.448(0.012); 0.468(0.012); 0.533 (0.016); 0.641 (0.009); 0. 670 (0.009); 0.704 (0.015); 0.783 (0. 011); and without filter (BF) - in integrated light (0.38-0.80 microns). The electronic-optical part of the polarimeter and the principle of its operation, as well as the method of observation and data processing, can be found in detail in the monograph by O. Kvaratskhelia [1]. The accuracy of the data given in the monograph was often verified by repeated observations in 2005-2009. on the same telescope and with the same equipment [8 - 10]. Table 1 gives the names and selenographic coordinates (λ - longitude, β - latitude) of the centers, measured by us objects of the lunar surface in accordance with the complete map of the Moon [2]. The same areas with the corresponding numbers are marked with crosses on the illustrative map of the Moon (see Fig. 1).


Below, in the form of a catalog, we present the obtained values of the maximum polarization (Pmax) values for the 100 areas of the lunar surface we measured in five light wavelengths. This catalog also contains the minimum values of the degree of polarization (Pmin) of the same objects. Measurements in the range 0.38-0.80 µm were performed in integral light using the same instrumentation system (telescope and polarimeter). Table 2 shows the albedo values for objects in 36 the catalog of O.I. Kvaratskhelia [1], taken from five different albedo maps of the Moon [3 - 7]. Table and catalog numbers correspond.

Published
2020-12-13
How to Cite
KVARATSKHELIA, O.I.. CATALOG KVARATSKHELIA OF EXTREME VALUES OF THE DEGREE OF POLARIZATION FOR 100 ARES OF THE LUNAR SURFACE. Astronomy & Astrophysics (CAUCASUS), [S.l.], v. 5, p. 35-49, dec. 2020. ISSN 2449-2914. Available at: <http://sjunijournals.ge/index.php/AA/article/view/7>. Date accessed: 18 apr. 2021.
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Articles