EUVITA - an extreme UV imaging telescope array with spectral capability

Details EUVITA - an extreme UV imaging telescope array with spectral capability EUVITA - an extreme UV imaging telescope array with spectral capability

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993exa.....4..117c&link_type=abstract

Experimental astronomy, vol. 4, no. 2, p. 117-135

Astronomy and Astrophysics

Astronomy

1

Extreme Ultraviolet Radiation, Spaceborne Telescopes, Ultraviolet Astronomy, Ultraviolet Telescopes, X Ray Astronomy, X Rays, Arrays, Eccentric Orbits

Scientific paper

EUVITA (Extreme UV Imaging Telescope Array) is a set of 8 extreme UV and soft X-ray normal incidence imaging telescopes, each of them sensitive in a narrow band (lambda/delta lambda = 15 to 80), centered at wavelengths between 50 and 175 A. Each telescope has an effective area of a few sq cm, a field of view of 1.2 deg and an angular resolution of 10 arcseconds. EUVITA will be flown on the Russian mission SPECTRUM X-G. This satellite will be launched in a highly eccentric orbit with a period of 4 days, allowing long, uninterrupted observations (e.g. 105 seconds). The present paper includes an overview of EUVITA's scientific capabilities and a short description of the instrument. Simulations of various types of sources show EUVITA's capability to detect galactic and extragalactic EUV sources. EUVITA's narrow spectral bands allow the measurement of source parameters such as temperature or power law index as well as interstellar absorption, and will resolve groups of strong lines emitted by optically thin hot plasmas.

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