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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 5, Iss. 7 — Jul. 1, 1966
  • pp: 1121–1123

Astigmatism Compensation in the Czerny–Turner Spectrometer

Murphy L. Dalton, Jr.  »View Author Affiliations


Applied Optics, Vol. 5, Issue 7, pp. 1121-1123 (1966)
http://dx.doi.org/10.1364/AO.5.001121


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Abstract

By distorting the plane grating into a concave cylinder, astigmatism found normally in the Czerny–Turner spectrometer can effectively be eliminated. The level of distortion would require metal grating blanks to avoid shearing stresses. The stigmatic principle has recently been demonstrated on a low resolution, uv illuminator patterned after the Czerny–Turner spectrograph. For the illuminator, it was desired that the image integrity of the circular entrance aperture be maintained at the focal plane. There is good reason to believe that medium resolution (~1 Å) instruments employing this stigmatic principle would maintain their resolution.

© 1966 Optical Society of America

History
Original Manuscript: January 25, 1966
Published: July 1, 1966

Citation
Murphy L. Dalton, "Astigmatism Compensation in the Czerny–Turner Spectrometer," Appl. Opt. 5, 1121-1123 (1966)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-5-7-1121


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References

  1. S. C. Miller, R. Mercure, W. A. Rense, Astrophys. J. 124, 580 (1956). [CrossRef]
  2. J. D. Purcell, R. Tousey, “Production of Toroidal Mirrors by Mechanical Bending”; J. D. Purcell, “Use of a Bent Grating in a Spectrograph for Lyman Alpha Solar Disc Photography,” papers presented at the 42nd Annual Optical Society Meeting, 1957.
  3. W. A. Rense, T. Violett, J. Opt. Soc. Am. 49, 139 (1959). [CrossRef]
  4. T. Namioka, J. Opt. Soc. Am. 51, 4 (1961). [CrossRef]
  5. A. H. Pfund, J. Opt. Soc. Am. 14, 337 (1927). [CrossRef]
  6. G. R. Rosendhal, J. Opt. Soc. Am. 52, 414 (1962).
  7. A. B. Shafer, L. R. Megill, L. Droppleman, J. Opt. Soc. Am. 54, 884 (1964). [CrossRef]
  8. H. N. Olsen, in Temperature, Its Measurement and Control in Science and Industry (Reinhold Publishing Corp., New York, 1962), Vol. 3, p. 593.
  9. G. R. Harrison, R. C. Lord, J. R. Loofbourow, Practical Spectroscopy (Prentice Hall, Inc., Englewood Cliffs, N. J., 1959), p. 565.
  10. Refer to any optical text, for example: R. S. Longhurst, Geometrical and Physical Optics (Longmans, Green and Co., New York, 1957), p. 335.
  11. Recall that for flattening the focal plane, the grating is placed at approximately 0.84 R/2 from the line connecting the vertices of the two mirrors. See N. Sassa, Sci. Light (Tokyo) 10, 53 (1961).
  12. R. J. Roark, Formulas for Stress and Strain (McGraw–Hill Book Co., Inc., New York, 1954), p. 102.

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