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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 7 — Mar. 1, 1998
  • pp: 1227–1230

Improving the accuracy of the caustic test

Dipankar P. K. Banerjee, Roderick V. Willstrop, and Boddapati G. Anandarao  »View Author Affiliations


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, Ingalls A. G. , 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

History
Original Manuscript: June 4, 1997
Revised Manuscript: September 2, 1997
Published: March 1, 1998

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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References

  1. R. Platzeck, E. Gaviola, “On the errors of testing and a new method for surveying optical surfaces and systems,” J. Opt. Soc. Am. 29, 484–500 (1939). [CrossRef]
  2. I. H. Schroader, “The caustic test,” in Amateur Telescope Making III, A. G. Ingalls, ed. (Kingsport Press, Kingsport, Tenn., 1953), pp. 429–456.
  3. A. Mackintosh, “Testers and testing,” in Advanced Telescope Making Techniques, A. Mackintosh, ed. (Willmann-Bell, Richmond, Va., 1977), pp. 33–38.
  4. J. Ojeda-Castaneda, “Foucault, wire and phase modulation tests,” in Optical Shop Testing, D. Malacara, ed. (Wiley, New York, 1978), pp. 260–264.
  5. R. D. Sigler, “Testers and testing,” in Advanced Telescope Making Techniques, A. Mackintosh, ed. (Willmann-Bell, Richmond, Va., 1977), pp. 44–45.

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