On the foci of Tandem Wadsworth spectrographs

Details On the foci of Tandem Wadsworth spectrographs On the foci of Tandem Wadsworth spectrographs

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979josa...69..165n&link_type=abstract

Optical Society of America, Journal, vol. 69, Jan. 1979, p. 165-167.

Physics

Foci, Gratings (Spectra), Optical Correction Procedure, Ray Tracing, Spectrographs, Imaging Techniques, Optical Reflection, Stigmatism, Surface Geometry, Wave Diffraction

Scientific paper

The horizontal foci of a Tandem Wadsworth spectrograph are calculated by using the correct ruling densities for both gratings. Results are quite different from those of previous analyses that used approximate ruling densities. Ray tracings confirm the analyses with the correct ruling densities and also indicate that this spectrograph possesses the excellent, nearly stigmatic properties found by the approximate analyses.

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