Spider diffraction - A comparison of curved and straight legs

Details Spider diffraction - A comparison of curved and straight legs Spider diffraction - A comparison of curved and straight legs

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apopt..23.1907r&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 23, June 15, 1984, p. 1907-1913.

Physics

Optics

3

Apertures, Diffraction Patterns, Optical Correction Procedure, Telescopes, Wave Diffraction, Far Fields, Gratings (Spectra), Masks, Shape Control

Scientific paper

It has been known for some time that, if curved legs rather than the usual straight ones are used in the spider that supports the secondary optics in certain telescopes, the visible diffraction effect is reduced. Fraunhofer theory is used to calculate the diffraction effects due to the curved leg spider. Calculated and photographic diffraction patterns are compared for straight and curved leg spiders.

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