Lunar and Planetary Cartography in Russia by Vladislav Shevchenko Zhanna Rodionova & Gregory Michael

Author:Vladislav Shevchenko, Zhanna Rodionova & Gregory Michael
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

A Polarimetric Atlas of the Moon was prepared by the Abastumani Observatory (Fig. 4.7) (Dzapiashvili and Korol 1982). It was one result of the intensive data collection at Abastumani Astrophysical Observatory in the period of 1971–75 in a process of persistent, pioneering works on studying the lunar surface with the electropolarimetric method (Dzapiashvili and Korol 1978), a traditional technique for this observatory in investigating celestial objects. A series of observations for 46 lunar phases was carried out between 1971 and 1975. Ninety polarimetric records were obtained on magnetic tape, with observations at each phase usually being duplicated. The records of 21 lunar phases were used for the Polarimetric Atlas of the Moon. The polarimetric maps in the atlas are arranged in the order of increasing values of the lunar phase angle, i.e., the angle subtended at the centre of the lunar disc by the directions to the Sun and the Earth. The phase angle is conventionally regarded to be negative before a full Moon and positive after.

Fig. 4.7Polarimetric atlas of the Moon with sample page

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