Echelle-spectrographs for the UV-astronomy

Details Echelle-spectrographs for the UV-astronomy Echelle-spectrographs for the UV-astronomy

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990dres.iafcx....b&link_type=abstract

IAF, International Astronautical Congress, 41st, Dresden, Federal Republic of Germany, Oct. 6-12, 1990. 5 p.

Astronomy and Astrophysics

Astronomy

Echelette Gratings, Spaceborne Telescopes, Spectrographs, Ultraviolet Astronomy, Collimators, Spectral Resolution, Ultraviolet Spectrometers

Scientific paper

In the middle 1990s, the Soviet Union plans to launch an orbital 1.70-m telescope for UV observations, which will contain a double echelle spectrograph with two detectors, for 1100 to 1955 A (VUV) and for 1945 to 3500 A (UV), respectively, making it possible to conduct simultaneous measurements of the whole spectral range. For order sorting, the UV spectrograph uses a prism, while the VUV spectrograph uses a concave grating. The spectrographs are coupled by moving one of the two collimator mirrors in front of the other. The space telescope is expected to reach a resolving power of 60,000.

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