MAIN MIRROR OF TELESCOPE Russian patent published in 1995 - IPC

FIELD: optical instrumentation engineering. SUBSTANCE: main mirror has reflecting surface in the form of central mirror 1 and six peripheral mirrors 2, mount 3 carrying serving 4 with tail parts 5, outer mount 6 with frames 7 attaching mount 3 to outer mount 6. Central mirror is set in mount 3 in axial 8 and radial 9 bearings. Each peripheral mirror 2 is arranged on its own tail part 5 about central mirror 1 with the aid of attachment means including supports 10 with central unit where axle 11 enters placed in three membranes 12. First one of them is located on butt of axle 11 and in bushing 13 situated in center of peripheral mirror 2 and two others - on axle and flange 14 of support 10. Attachment means of peripheral mirrors 2 have peripheral unit including three triple chucks uniformly positioned along edge of peripheral mirror 2. Each chuck has hollow axle 16 to which spring joint 17 is attached placed on plate 19 common for three chucks and axle of drive 20. Plate 19 and drive 20 are put on support 10. In compliance with operating conditions central mirror 1 and peripheral mirrors 2 should keep adjusted position during operation and after transportation. In case of misalignment peripheral mirrors 2 can turn and hold initial position thanks to sensors 21 arranged on serving 4 and drives 20 located on supports 10. EFFECT: keeping quality of image of telescope mirror when telescope is used under dynamic mode of operation. 4 dwg