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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 31 — Nov. 1, 2003
  • pp: 6245–6254

Wadsworth mount redux: paraboloidal versus spherical gratings

William R. Hunter, Michael P. Kowalski, and Raymond G. Cruddace  »View Author Affiliations


Applied Optics, Vol. 42, Issue 31, pp. 6245-6254 (2003)
http://dx.doi.org/10.1364/AO.42.006245


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Abstract

Spherical and paraboloidal diffraction gratings are considered for use on an experiment involving a collection of satelliteborne spectrographs that will investigate astrophysical plasmas in the spectral region from approximately 100 to 300 Å. We shall use eight spectrographs: Wadsworth mounts in near-normal incidence with effective focal lengths of 3 m, each centered on a chosen wavelength in this spectral range. Ray tracings show that paraboloidal gratings used in the Wadsworth mount have a significant increase in resolution over spherical gratings of the same effective focal length, used in the same mounting, as long as the spectral ranges are small (approximately 10% of the central wavelength). This increase in resolution is due to the spatial extent of coma for a paraboloidal grating that is less than the circle of least confusion of spherical gratings.

© 2003 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(260.7200) Physical optics : Ultraviolet, extreme
(350.5400) Other areas of optics : Plasmas
(350.5730) Other areas of optics : Resolution
(350.6090) Other areas of optics : Space optics

History
Original Manuscript: March 14, 2003
Revised Manuscript: July 23, 2003
Published: November 1, 2003

Citation
William R. Hunter, Michael P. Kowalski, and Raymond G. Cruddace, "Wadsworth mount redux: paraboloidal versus spherical gratings," Appl. Opt. 42, 6245-6254 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-31-6245


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References

  1. R. Tousey, J.-D. F. Bartoe, G. E. Brueckner, J. D. Purcell, “Extreme ultraviolet spectroheliograph ATM experiment S082A,” Appl. Opt. 16, 870–878 (1977). [PubMed]
  2. R. G. Cruddace, M. P. Kowalski, D. Yentis, C. M. Brown, H. Gursky, M. A. Barstow, N. P. Bannister, G. W. Fraser, J. E. Spragg, J. S. Lapington, J. A. Tandy, B. Sanderson, J. L. Culhane, T. W. Barbee, J. F. Kordas, W. Goldstein, G. G. Fritz, “High resolution spectroscopy of G191-B2B in the extreme ultraviolet,” Astrophys. J. Lett. 565, L47–L50 (2002). [CrossRef]
  3. J. L. Sirks, “On the astigmatism of Rowland’s concave gratings,” Astron. Astrophys. 13, 763–768 (1894).
  4. F. L. O. Wadsworth, “The modern spectroscope. XV,” Astrophys. J. 3, 47–62 (1896). [CrossRef]
  5. M. P. Kowalski, R. G. Cruddace, K. S. Wood, D. J. Yentis, H. Gursky, T. W. Barbee, W. H. Goldstein, J. F. Kordas, G. G. Fritz, W. R. Hunter, M. A. Barstow, N. P. Bannister, J. L. Culhane, J. S. Lapington, “The Astrophysical Plasmadynamic Explorer (APEX): a high-resolution spectroscopic observatory,” in Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation, J. C. Blades, O. H. W. Siegmund, eds., Proc. SPIE4854, 640–653 (2003). [CrossRef]
  6. beam 4 is available from Stellar Software, P.O. Box 10183, Berkeley, Calif. 94709, www.stellarsoftware.com .
  7. G. H. Spencer, M. V. R. K. Murty, “General ray-tracing procedure,” J. Opt. Soc. Am. 52, 672–678 (1962). [CrossRef]
  8. D. Korsch, Reflective Optics (Academic, New York, 1991), p. 82.

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