Abstract

Holographic gratings cause much less stray light and spectral degradation than classically ruled gratings. Their high groove densities enable high dispersion in first diffraction order and a high spectrograph through-put comparable to the best echelles. Their lower reflective efficiency is compensated by the avoidance of cross dispersers, enabling efficient high-fidelity spectroscopy with single-pass spectrographs. Instrumental profiles of the ESO coudé spectrograph with large holographic and ruled gratings have been studied in detail, and their effects on astronomical spectra are discussed and compared to those of other instruments.

© 1978 Optical Society of America

Echelle and holographic gratings compared for scattering and spectral resolution

John Kielkopf
Appl. Opt. 20(19) 3327-3331 (1981)

Interferometer-grating spectrograph for high resolution astronomical spectroscopy in the middle uv

B. Bates, D. J. McCartney, C. D. McKeith, A. McQuoid, and O. E. Sproule
Appl. Opt. 17(13) 2119-2124 (1978)

High Dispersion Stellar Spectroscopy with an Echelle Grating

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

Simple selection rules for VUV and XUV diffraction gratings

E. G. Loewen and M. Neviere
Appl. Opt. 17(7) 1087-1092 (1978)

Comprehensive analysis of gratings for ultraviolet space instrumentation

George H. Mount and William G. Fastie
Appl. Opt. 17(19) 3108-3116 (1978)