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Proceedings Paper

Correction Of Spherochromatism In Schmidt Cameras
Author(s): Richard G. Bingham
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Paper Abstract

The variation with wavelength of spherical aberration in Schmidt cameras can be mitigated by a number of different methods. The more usual one is to balance this spherochromatism against longitudinal chromatic difference of focus, by introducing a positive vertex power at the corrector surface. An alternative is to make an achromatic corrector of two materials with different dispersions. A further method described here is to use a negative vertex power or chromatic aberration at the corrector, which induces a compensating spherochromatism by changing the incidence height at the mirror surface. Various other aberrations can be corrected. Examples include a solid camera for use with a charge-coupled device as detector in a spectrometer.

Paper Details

Date Published: 16 June 1983
PDF: 8 pages
Proc. SPIE 0369, Max Born Centenary Conf, (16 June 1983); doi: 10.1117/12.934383
Show Author Affiliations
Richard G. Bingham, Royal Greenwich Observatory (England)

Published in SPIE Proceedings Vol. 0369:
Max Born Centenary Conf
M. John Colles; D. William Swift, Editor(s)

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