Aspheric plate corrector for prime focus

Details Aspheric plate corrector for prime focus Aspheric plate corrector for prime focus

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...141..401s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 141, no. 2, Dec. 1984, p. 401-406.

Astronomy and Astrophysics

Astrophysics

2

Asphericity, Focusing, Optical Correction Procedure, Telescopes, Aberration, Optimization

Scientific paper

This paper deals with two kinds of aspheric plate corrector for prime focus. The first is a four-element corrector consisting of three aspheric plates and a spherical lens. The other is a three-element corrector consisting of only three aspheric plates. Several examples applied to large telescopes, such as the Chinese 2.16 M, the ESO 3.6 M, and the Palomar 5.08 M, are given in this paper. The configurations of these systems and their spot diagrams are specified. Compared with a spherical lens corrector, these systems will give a better aberration correction covering a wide field and a broader spectral region. At the end of the paper, an optimization method for designing aspheric plate correctors is discussed.

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