Optical design of a 25-m telescope for optical wavelengths

Details Optical design of a 25-m telescope for optical wavelengths Optical design of a 25-m telescope for optical wavelengths

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2199..945o&link_type=abstract

Proc. SPIE Vol. 2199, p. 945-949, Advanced Technology Optical Telescopes V, Larry M. Stepp; Ed.

Computer Science

Scientific paper

Results from the design of a 28 m optical telescope with a spherical segmented primary are presented. The telescope is a four mirror configuration reimaging M1 on M4. The wish for a small and compact structure resulting in a need for controlling high order aspherical mirror coefficients has initiated development of a design procedure satisfying Fermat principle and Abbes Sine condition. Thus the only remaining point aberration will be astigmatism. For a given shape of M4, the design procedure delivers the Taylor expansion coefficients for the shapes of M3 and M4 to be directly used for optical analysis by software capable of handling the needed number of coefficients.

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