6 June 2018 Stray light protection system of the AZT-33VM telescope focal plane, Sayan astronomical complex
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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.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Sergei A. Chuprakov, Maksim V. Eselevich, 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 Submission: Received 11 October 2017; Accepted 22 May 2018
Submission: Received 11 October 2017; Accepted 22 May 2018
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