Wide Spectral Range F/2.3 Prime Focus Spherical Corrector For 3.5m Ritchey-Chretien Telescope

M. Magnani; S. Pieri; A. Romoli

doi:10.1117/12.961507

26 September 1989 Wide Spectral Range F/2.3 Prime Focus Spherical Corrector For 3.5m Ritchey-Chretien Telescope

M. Magnani, S. Pieri, A. Romoli

Proceedings Volume 1130, New Technologies for Astronomy; (1989) https://doi.org/10.1117/12.961507
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

This paper deals with the design of a three spherical lenses corrector, able to produce wide flat field at the prime focus with focus ratio F/2.2 - 3.5m of a R-C telescope. The system is corrected over a spectral range extending from 300nm to 1100 nm. The corrector has the following characteristics: reduced size of the optics; all spherical surfaces; resolution better than 1 arcsec within 30 arcmin flat field ; possibility to extend the field up to 1 degree with reduced resolution. The image quality of the corrector is shown by means of Spot Diagrams, Point Spread Function and Encircled Energy Function for different off - axis values and spectral ranges. The paper also includes an analysis of possible alignment errors performed by means of computed interferograms.

Citation Download Citation

M. Magnani, S. Pieri, and A. Romoli "Wide Spectral Range F/2.3 Prime Focus Spherical Corrector For 3.5m Ritchey-Chretien Telescope", Proc. SPIE 1130, New Technologies for Astronomy, (26 September 1989); https://doi.org/10.1117/12.961507

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