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WSO/UV spectrographs: the expected performance of HIRDES
Authors:N Kappelmann  J Barnstedt  K Werner  H Becker-Ross  S Florek
Institution: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
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 102–310 nm spectral band is split to feed two echelle spectrographs covering the UV range 174–310 nm and the vacuum-UV range 102–176 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.
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