A simple null test for a Schmidt camera aspheric corrector

Existing accurate optical tests of the aspheric corrector of a Schmidt camera generally require auxiliary optics of good quality and large diameter. The test described here, which is believed to be original, requires only the spherical mirror which is to be used in the camera, and is accurate to the...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 1980-10, Vol.192 (3), p.455-466
Main Author: Willstrop, R. V.
Format: Article
Language:English
Online Access:Get full text
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Summary:Existing accurate optical tests of the aspheric corrector of a Schmidt camera generally require auxiliary optics of good quality and large diameter. The test described here, which is believed to be original, requires only the spherical mirror which is to be used in the camera, and is accurate to the diffraction limit if the camera is not so fast that the profile of the corrector requires a term in r6 in addition to the usual terms in r2 and r4. Another attractive feature of the test is that it may be carried out in yellow or red light although the corrector is to be figured for use in the blue or ultraviolet spectrum.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/192.3.455