SPACE TELESCOPE FOR SIMULTANEOUS OBSERVATION OF EARTH AND STARS Russian patent published in 2021 - IPC G02B23/10 G01C21/24 G02B17/08 

FIELD: telescopic equipment.

SUBSTANCE: invention can be used for remote sensing of the Earth, mapping, photographing objects on the surface of the Earth and other celestial bodies. The telescope contains the first channel if for Earth observation, in which the first light filter, the optical system and the photodetector are installed, part of which is covered by the second light filter; the second channel is for observing stars, in which the first flat inclined mirror is installed, located in the plane of intersection of the first and second channels with the possibility of directing light from the stars to a part of the entrance aperture of the optical system of the telescope, bypassing the first light filter, the third channel is for observing stars, in which a second flat inclined mirror is installed, located in the plane of intersection of the first and third channels with the possibility of directing light from the stars of another part of the celestial sphere to a part of the entrance aperture of the optical system of the telescope, bypassing the first light filter. The passbands of the first and second light filters do not intersect.

EFFECT: technical result is a more accurate determination of the coordinates of objects in the image of the Earth due to its referencing to the coordinate system with high accuracy, the same in all directions.

5 cl, 6 dwg