Stray light protection system of the AZT-33VM telescope focal plane, Sayan astronomical complex

Sergei A. Chuprakov; Maksim V. Eselevich; Ivan V. Korobtsev

doi:10.1117/1.JATIS.4.2.024002

6 June 2018 Stray light protection system of the AZT-33VM telescope focal plane, Sayan astronomical complex

Sergei A. Chuprakov, Maksim V. Eselevich, Ivan V. Korobtsev

Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 4, Issue 2, 024002 (June 2018). https://doi.org/10.1117/1.JATIS.4.2.024002

Abstract

Developed according to quasi-Ritchey–Chretien, the AZT-33VM telescope is designed for up to 2.8-deg wide-field survey observations; it has inner position of the focal plane and the prefocal lens corrector installed at 0.12 of the equivalent focal length from the image plane. Classic methods to calculate direct stray light protection system in two-mirror systems allow us to find the optimal configuration of the baffles providing minimum obscuration of the entrance pupil. The design of stray light protection baffles for a future large rectangular detector 260 × 124 mm was proposed. The baffles were calculated from axisymmetric condition in a plane passing through the system centerline and a point of the detector perimeter. Using the ray-tracing method, we simulated optimized baffles for a rectangular detector. We assessed obscuration of the entrance pupil with an optimal design baffle as well their advantages for the modulation transfer function.

Citation Download Citation

Sergei A. Chuprakov, Maksim V. Eselevich, and Ivan V. Korobtsev "Stray light protection system of the AZT-33VM telescope focal plane, Sayan astronomical complex," Journal of Astronomical Telescopes, Instruments, and Systems 4(2), 024002 (6 June 2018). https://doi.org/10.1117/1.JATIS.4.2.024002

Received: 11 October 2017; Accepted: 22 May 2018; Published: 6 June 2018

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