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Fig. 4 | Earth, Planets and Space

Fig. 4

From: First two-way laser ranging to a lunar orbiter: infrared observations from the Grasse station to LRO’s retro-reflector array

Fig. 4

New optical test results. Measurements of the peak optical cross-sections (OCS) at 532 (left column) and 1064 nm (right column) of a RR flight spare of the LRO LRA. Five far-field diffraction patterns were averaged for the entire range of the incidence angles tested; the error bars indicate one standard deviation. The gray line indicates the theoretical prediction based on the reduction of the cross-sectional area (Minott 1974). The OCS measurements at each wavelength were calibrated against a 1.25-in. silver mirror

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