MANUFACTURING AND CERTIFICATION OF A DIFFRACTION CORRECTOR FOR CONTROLLING THE SURFACE SHAPE OF THE SIX-METER MAIN MIRROR OF THE BIG AZIMUTHAL TELESCOPE OF THE RUSSIAN ACADEMY OF SCIENCES
R. K. Nasyrov, A. G. Poleshchuk
Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, pr. Academika Koptyuga, 1
Keywords: дифракционная оптика, интерферометрия контроль асферической оптики, diffraction optics, interferometry, aspherical optics control
Abstract
This paper describes the development and manufacture of diffraction corrector and simulator for the interferometric control of the surface shape of the 6-m main mirror of the Big Azimuthal Telescope of the Russian Academy of Sciences. The effect of errors in manufacture and adjustment on the quality of the measurement wavefront is studied. The corrector is controlled with the use of an off-axis diffraction simulator operating in a reflection mode. The measured error is smaller than 0.0138λ(RMS).
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