Polarimetric mapping of the Moon at a phase angle near the polarization minimum

Details Polarimetric mapping of the Moon at a phase angle near the polarization minimum Polarimetric mapping of the Moon at a phase angle near the polarization minimum

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008icar..198....1s&link_type=abstract

Icarus, Volume 198, Issue 1, p. 1-6.

Computer Science

5

Scientific paper

At small phase angles the light scattered by the Moon reveals a negative polarization branch whose average amplitude is 1%. We present results of polarimetric mappings of the Moon in P at a phase angle near 11°. The observations were carried out with the Kharkov 50-cm telescope at the Maidanak Observatory (Middle Asia) using a polarizing filter. A thorough calibration of the camera array allows for the reliable detection of significant variations of |P| over the lunar surface, from 0.2 to 1.6%, at a wavelength of 0.52 μm. The smallest |P| are characteristic of young bright craters, while the |P| are the highest for the lunar highland and bright mare areas. The horse-shoe shape of the correlation dependence P (albedo) is treated with data of our laboratory measurements of powdered surfaces and computer modeling of light scattering by small particles with the DDA (discrete dipole approximation) technique.

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