Ways to solve the problem of controlling the deformation of the primary mirror on BTA-6 telescope
V.V. Sychev1, A.I. Klem2, K.I. Korotkova3, O.I. Komarova4
1N.E. Bauman Moscow State Technical University, Moscow, Russia
2JSC "Aviation Holding Company "Sukhoi", Moscow, Russia
3OKB Gidropress JSC State Atomic Energy Corporation Rosatom, Podolsk, Russia
4JSC "TSNIRTI Im. akademika A.I. Berga", Moscow, Russia
Keywords: Large Azimuth Telescope (BTA-6), test of asphere, interferometer, computer generated hologram, pseudo-inversion method, measurement error
Abstract
The necessity and possible ways of monitoring the deformations of the primary mirror directly on the BTA telescope during its operation are discussed. The analysis of the most acceptable methods and control schemes is carried out. A scheme is proposed that implements the pseudo-reversal method, which simply and originally solves the control problem based on the experience of AST-1200 telescope with a composite primary mirror. The possible magnitude of the measurement errors of the system proposed for controlling the deformations of the primary mirror is estimated.
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