Design and development of a wide field telescope

Il Moon; Sangon Lee; Juhee Lim; Ho-Soon Yang; Hyug-Gyo Rhee; Jae Bong Song; Yun Woo Lee; Jong Ung Lee; Ho Jin

doi:10.1117/12.926647

27 September 2012 Design and development of a wide field telescope

Il Moon, Sangon Lee, Juhee Lim, Ho-Soon Yang, Hyug-Gyo Rhee, Jae Bong Song, Yun Woo Lee, Jong Ung Lee, Ho Jin

Proceedings Volume 8444, Ground-based and Airborne Telescopes IV; 844448 (2012) https://doi.org/10.1117/12.926647
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

A prototype of large wide field telescope is a Cassegrain telescope which covers 2° field of view with two hyperbolic mirrors, a 0.5 m primary mirror and a 0.2 m secondary mirror with multiple correction lenses. To fulfill the optical and mechanical performance requirements in design and development phase extensive finite element analyses using NX NASTRAN and optical analyses with CODE V and PCFRINGE have been conducted for the structure of optical system. Analyses include static deformation (gravity and thermal), frequency, dynamic response analysis, and optical performance evaluations for minimum optical deformation. Image motion is also calculated based on line of sight sensitivity equations integrated in finite element models. A parametric process was performed for the design optimization to produce highest fundamental frequency for a given weight, as well as to deal with the normal concerns about global performance.

Citation Download Citation

Il Moon, Sangon Lee, Juhee Lim, Ho-Soon Yang, Hyug-Gyo Rhee, Jae Bong Song, Yun Woo Lee, Jong Ung Lee, and Ho Jin "Design and development of a wide field telescope", Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 844448 (27 September 2012); https://doi.org/10.1117/12.926647

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