Improving the accuracy of the caustic test
Applied Optics, Vol. 37, Issue 7, pp. 1227-1230 (1998)
http://dx.doi.org/10.1364/AO.37.001227
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Abstract
The caustic or Gaviola test, used for testing aspheric mirrors, has been studied with reference to the research of Schroader [“The caustic test,” in Amateur Telescope Making III, A. G. Ingalls, ed. (Kingsport Press, Kingsport, Tenn., 1953), pp. 429–456]. It is shown that the two central formulas, which are used to determine the mirror quality, give significant errors for the large-diameter, short-focal-length mirrors commonly used in astronomical optics. We derive analytically two alternative equations, which are more exact, and show that they lead to significant improvement.
© 1998 Optical Society of America
OCIS Codes
(110.6770) Imaging systems : Telescopes
(230.4040) Optical devices : Mirrors
(350.1260) Other areas of optics : Astronomical optics
Citation
Dipankar P. K. Banerjee, Roderick V. Willstrop, and Boddapati G. Anandarao, "Improving the accuracy of the caustic test," Appl. Opt. 37, 1227-1230 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-7-1227
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