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Preprint 04/08

WSO/UV spectrographs: the expected performance of HIRDES

N. Kappelmann (1), J. Barnstedt (1), K. Werner (1), H. Becker-Ross (2), S. Florek (2)

(1) Kepler Center for Astro and Particle Physics, Institute for Astronomy and Astrophysics, University of Tübingen, Sand 1, 72076 Tübingen, Germany
(2) Institute for Analytical Sciences, Albert-Einstein-Str. 9, 12489 Berlin, Germany

To be published in: Astrophysics and Space Science

Abstract. The World Space Observatory Ultraviolet (WSO/UV) is a multi-national project grown out of the needs of the astronomical community to have future access to the UV range. WSO/UV consists of a single UV telescope with a primary mirror of 1.7 m diameter feeding the UV spectrometer and UV imagers. The spectrometer comprises three different spectrographs, two high-resolution echelle spectrographs (the High-Resolution Double-Echelle Spectrograph, HIRDES) and a low-dispersion long-slit instrument. Within HIRDES the 102? nm spectral band is split to feed two echelle spectrographs covering the UV range 174? nm and the vacuum-UV range 102? nm with high spectral resolution (R>55000). The technical concept is based on the heritage of two previous ORFEUS SPAS missions. The phase-B1 development activities are described in this paper considering the performance of the instruments.
 
Key words: Visible and ultraviolet spectrometers - Space-based ultraviolet, optical, and infrared telescopes - Astronomical and space-research instrumentation

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