World Space Observatory - Ultraviolet project is an international space observatory for spectroscopy and imaging in 115-310 nm spectral range. The WSO-UV telescope feeds in its focal plane two main instruments for spectroscopy (unit of spectrographs - WUVS) and imaging (field camera unit - FCU) as well as Fine Guidance System (FGS). Significant progress in the CCD development allows to use the back illuminated CCD detectors with anti-reflection coating for spectroscopic observations in this ultraviolet domain instead of wide used MCP detectors. In this paper we present the final optical design of the WUVS instrument.
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