The use of transmission gratings in astronomical optics

Details The use of transmission gratings in astronomical optics The use of transmission gratings in astronomical optics

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980crasb.291..205b&link_type=abstract

Academie des Sciences (Paris), Comptes Rendus, Serie B - Sciences Physiques, vol. 291, no. 8, Oct. 27, 1980, p. 205-207. In Fren

Astronomy and Astrophysics

Astronomy

4

Astronomy, Gratings (Spectra), Light Transmission, Optical Equipment, Optical Filters, Optical Reflection, Prisms

Scientific paper

Consideration is given to the luminosity achievable by transmission gratings in relation to that provided by conventional reflection gratings for astronomical applications. It is shown that the grism, or Carpenter prism, in which light is incident perpendicular to the plane face of the prism and exits through an inclined facetted face, can be twice as luminous as a parallel-face transmission grating, reaching a transmissivity of 90 percent. Such a value is comparable to that of the best reflection gratings in certain astronomical applications in which the useful resolution is always far from theoretical.

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