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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 28 — Oct. 1, 2005
  • pp: 5947–5955

Fast computation of the Narcissus reflection coefficient for the Herschel far-infrared/submillimeter-wave Cassegrain telescope

Robert L. Lucke, Jacqueline Fischer, Arturo M. Polegre, and Douwe A. Beintema  »View Author Affiliations


Applied Optics, Vol. 44, Issue 28, pp. 5947-5955 (2005)
http://dx.doi.org/10.1364/AO.44.005947


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Abstract

Placement of a scatter cone at the center of the secondary of a Cassegrain telescope greatly reduces Narcissus reflection. To calculate the remaining Narcissus reflection, a time-consuming physical optics code such as GRASP8 is often used to model the effects of reflection and diffraction. Fortunately, the Cassegrain geometry is sufficiently simple that a combination of theoretical analysis and Fourier propagation can yield rapid, accurate results at submillimeter wavelengths. We compare these results with those from GRASP8 for the heterodyne instrument for the far-infrared on the Herschel Space Observatory and confirm the effectiveness of the chosen scatter cone design.

© 2005 Optical Society of America

OCIS Codes
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(260.0260) Physical optics : Physical optics
(260.3090) Physical optics : Infrared, far

ToC Category:
Physical Optics

History
Original Manuscript: December 14, 2004
Revised Manuscript: April 13, 2005
Manuscript Accepted: April 14, 2005
Published: October 1, 2005

Citation
Robert L. Lucke, Jacqueline Fischer, Arturo M. Polegre, and Douwe A. Beintema, "Fast computation of the Narcissus reflection coefficient for the Herschel far-infrared/submillimeter-wave Cassegrain telescope," Appl. Opt. 44, 5947-5955 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-28-5947

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