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EUVITA — An extreme UV imaging telescope array with spectral capability |
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| Authors: | T J -L Courvoisier A Orr P Bü hler A Zchnder R Henneck F Stauffacher J Biakhowski N Schlumpf W Schoeps A Mchedlishvili R Sunyaev V Arefev A Yascovich G Babalyan M Pavlinsky J P Delaboudini re T Carone O Siegmund J Warren D Leahy N Salaschenko and J Platonov |
| Institution: | 1 Geneva Observatory, 1290 Sauverny, Switzerland 2 Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland 3 Russian Academy of Sciences, Space Research Institute (IKI), Moscow, CIS, Russia 4 Institut d'Astrophysique Spatiale, France 5 Space Science Laboratory (SSL), Berkeley, USA 6 University of Calgary, Canada 7 Institute of Applied Physics, Nizhny Novgorod, CIS, Russia |
| Abstract: | EUVITA is a set of 8 extreme UV normal incidence imaging telescopes, each of them sensitive in a narrow band (λ/Δλ = 15 to 80), centered at wavelengths between 50 and 175 Å. Each telescope has an effective area of a few cm2; a field of view of 1.2° and a spatial resolution of 10 arcsec. 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). 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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