FIELD: optical astronomy; detection and ranging of objects. SUBSTANCE: number of holes should be as many as possible in order to eliminate overlapping of spots in Hartmann diaphragm. Radiation of any individual beam at the plane of Hartmann diaphragm is coded by means of linear polarization of radiation at holes of the diaphragm. Polarization selection of total radiation beam is provided before detection taking into account that the beam has already passed through diaphragm and objective of the telescope. EFFECT: improved efficiency. 2 dwg
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