Spectrograph unit of the "Spektr-UF" space mission
We present the description and the revised characteristics of the spectrographs unit (SU) - the main instrument of the space mission “Spektr- UF”. The SU includes three channels and is intended for obtaining spectra of high (R ≃ 50000) and low (R ≃ 1000) resolution of the observed objects in the UV range of electromagnetic radiation (115-305 nm). The main properties of the new design of SU, its efficiency and the current state of manufacturing of its samples and mock-ups are discussed.