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Applied Optics

Applied Optics


  • Vol. 11, Iss. 9 — Sep. 1, 1972
  • pp: 1978–1985

Pressure-Scanned Echelle Grating plus Fabry-Perot Stellar Spectrophotometer

James Caplan  »View Author Affiliations

Applied Optics, Vol. 11, Issue 9, pp. 1978-1985 (1972)

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A photoelectric stellar spectrophotometer, with 0.3-Å resolution, for use near Hα (6563 Å) is described. A Fabry-Perot etalon and an echelle grating are simultaneously pressure-scanned. The Fabry-Perot can be bypassed and the grating system used alone to obtain narrow-band (4.89-Å) Hα indices, in which case the pressure system allows the necessary radial velocity corrections to be made conveniently.

© 1972 Optical Society of America

Original Manuscript: September 27, 1971
Published: September 1, 1972

James Caplan, "Pressure-Scanned Echelle Grating plus Fabry-Perot Stellar Spectrophotometer," Appl. Opt. 11, 1978-1985 (1972)

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