Share Email Print
cover

Proceedings Paper

Wide Spectral Range F/2.3 Prime Focus Spherical Corrector For 3.5m Ritchey-Chretien Telescope
Author(s): M. Magnani; S. Pieri; A. Romoli
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 26 September 1989
PDF: 9 pages
Proc. SPIE 1130, New Technologies for Astronomy, (26 September 1989); doi: 10.1117/12.961507
Show Author Affiliations
M. Magnani, Officine Galileo (Italy)
S. Pieri, Officine Galileo (Italy)
A. Romoli, Officine Galileo (Italy)


Published in SPIE Proceedings Vol. 1130:
New Technologies for Astronomy
Jean-Pierre Swings, Editor(s)

© SPIE. Terms of Use
Back to Top