Echellette spectroscopy by means of an upgraded standard Cassegrain spectrograph

Details Echellette spectroscopy by means of an upgraded standard Cassegrain spectrograph Echellette spectroscopy by means of an upgraded standard Cassegrain spectrograph

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...234..583s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 234, no. 1-2, Aug. 1990, p. 583-589.

Physics

Optics

5

Cassegrain Optics, Charge Coupled Devices, Echelette Gratings, High Dispersion Spectrographs, Astronomical Spectroscopy, Spectral Bands, Spectral Resolution, Spectrograms

Scientific paper

With only a few changes a conventional Cassegrain CCD spectrograph can be upgraded to an echellette spectrograph. In this mode, cross-dispersed spectrograms are obtained which match the two-dimensional detector format and cover the full spectral range from 0.32 to 1.1 micron at a spectral resolution up to R of about 3500. The allowable slit length ranges from 10 to 40 arcsec (on the sky), depending on the resolution of the used echellette grating. The paper describes the instrumental requirements, the properties of the obtained spectrograms, and the reduction procedures developed for echellette data sets.

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