Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..247t&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 93, Apr.-May 1981, p. 247-252.
Astronomy and Astrophysics
Astronomy
17
Astronomical Spectroscopy, Fabry-Perot Spectrometers, Nebulae, Infrared Astronomy, Optical Paths, Piezoelectricity, Spectral Resolution, Visible Spectrum
Scientific paper
Two Fabry-Perot spectrometers which have been used to study the emission spectra of nebulae at 0.6 and 2.1 microns are described. Both instruments use a single piezoelectrically scanned etalon at the Cassegrain focus of the telescope. The spectral resolution of both instruments is about 15 km/sec. The maximum fields of view of the optical and IR spectrometers on the Leuschner Observatory 0.76-m telescope are 2 and 1.5 arcmin, respectively, and the noise equivalent radiances are 4.2 x 10 to the -7th and 0.00012 erg/sq cm per sec per ster, respectively. The problems of etalon drift, data collection, and wavelength calibration are discussed.
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