PHASE FUNCTION OF LUNAR COLOR RATIO Yu. I. Velikodsky, Ya. S. Volvach, V. V. Korokhin, Yu. G. Shkuratov, V. G. Kaydash, N. V. Opanasenko, M. M. Muminov,

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PHASE FUNCTION OF LUNAR COLOR RATIO Yu. I. Velikodsky, Ya. S. Volvach, V. V. Korokhin, Yu. G. Shkuratov, V. G. Kaydash, N. V. Opanasenko, M. M. Muminov, B. B. Kahharov Institute of Astronomy, Kharkov National University, Kharkjv, Ukraine Andijan-Namangan Scientific Center of Uzbekistan Academy of Sciences, Andijan city, Uzbekistan 2MS3, Moscow, Oct., 2011

PHASE FUNCTION OF LUNAR COLOR RATIO C(λ 1 /λ 2 )=A(λ 1 )/A(λ 2 ) Lunar samples: phase curves of color ratio C(620/430 nm)

Observations: Maidanak (Uzbekistan), Aug-Oct cm refractor (guide of Kharkov telescope) Canon EOS 300D 20,000 images (130 GB) Phase angles 1.6–168° "R": 0.61 µm, "G": 0.53 µm, "B": 0.47 µm

PHASE FUNCTION OF LUNAR COLOR RATIO Map of color ratio C(603/472 nm) at α=16°

PHASE FUNCTION OF LUNAR COLOR RATIO Phase curves of color ratio C(603/472 nm) for mare (a red part of Mare Imbrium) and highland (Gylden) sites

PHASE FUNCTION OF LUNAR COLOR RATIO Phase curve of color ratio C(603/472 nm) averaged over lunar disk

PHASE FUNCTION OF LUNAR COLOR RATIO Ratio of pairs of ROLO’s model phase curves of disk- equivalent albedo