Abstract

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

URSIES: an Ultravariable Resolution Single Interferometer Echelle Scanner

Arne A. Wyller and Theodore Fay
Appl. Opt. 11(5) 1152-1162 (1972)

Seven-Channel Fabry-Perot Spectrum Analyzer Used in Laser Scattering Measurements

P. K. John and R. Benesch
Appl. Opt. 11(1) 153-159 (1972)

Digitally Pressure-Scanned Fabry-Perot Interferometer for Studying Weak Spectral Lines

V. G. Cooper, B. K. Gupta, and A. D. May
Appl. Opt. 11(10) 2265-2268 (1972)

Pressure-scanned three-pass Fabry-Perot interferometer

L. N. Durvasula and Robert W. Gammon
Appl. Opt. 17(20) 3298-3303 (1978)

High Dispersion Stellar Spectroscopy with an Echelle Grating

W. Liller
Appl. Opt. 9(10) 2332-2336 (1970)