Optical design of flat field anastigmatic three-mirror telescope

Flat Field Anastigmat 조건을 만족하는 3반사 망원경 광학계 설계

  • Published : 1997.06.01

Abstract

To design a high resolution three-mirror telescope for visible spectral region, initial design technique based on the generation of flat field anastigmatic solutions limited by mechanical structure was proposed. An initial design of the three-mirror telescope that features relatively high focal ratio(F/14.5), large aperture diameter(600 mm), and squared field of view(0.27$^{\circ}$$\times$1.3$^{\circ}$) was done using an initial design program. Code V was used to optimized the initially designed optical system. As a result, MTF value of the telescope was about 0.5 at Nyquist frequency in each field except for the edge of the CCD.

가시광선 영역의 고분해능 3반사 망원경 광학계 설계를 위하여, 광학계의 기구적 제한사항을 만족함과 동시에 Flat Field Anastigmat 조건을 만족하는 해를 구하는 초기설계 기법이 제시되었으며, 이를 기초로 프로그램을 작성하여 F/14.5, 구경 600 mm, 시야 0.27.deg. * 1.3.deg.의 3반사 망원경광학계의 초기설계를 수행하였다. 초기 설계된 광학계의 최적화를 위하여 Code V를 사용하였으며, 그 결과로서 CCD의 모서리 부분 Field를 제외한 모든 Field에서 Nyquist Frequency에서의 MTF값이 0.5이상이었다.

Keywords

References

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