SUN ATTITUDE PICKUP Russian patent published in 2007 - IPC G01C21/24 G01J1/20 

FIELD: measuring equipment, applicable for determination of the Sun angular coordinates in the spacecraft coordinate system.

SUBSTANCE: the Sun attitude pickup has an optical system made in the form of a wide-angle lens including an inlet and outlet plano-convex lenses with a diaphragm placed between them, an optical element is positioned in its holes, matrix photodetector, and a unit for processing of information and computation of coordinates. The refractive indices of the optical components are selected proceeding from the relation: n₁≥n₂<n₃, where n₁ - the refractive index of the inlet plano-convex lens; n₂ - the refractive index of the optical element; n₃ - the refractive index of the outlet plano-convex lens.

EFFECT: obtained information in a wide angular field with a high precision.

3 cl, 1 dwg