WSO-UV Telescope.jpg
Model of WSO-UV telescope during "Space Week" in Madrid, May 2011
Mission typeSpace telescope
OperatorRussian Astro Space Center
Spacecraft properties
ManufacturerNPO Lavochkin
Payload mass2,840 kg (6,261 lb)
Start of mission
Launch dateQ4 2028 (proposed)[1]
RocketAngara A5M[2]
Launch siteVostochny Site 1A
Main telescope
Wavelengths115 to 315 nm
Spektr program

The Spektr-UV, also known as World Space Observatory-Ultraviolet (WSO-UV), is a proposed ultraviolet space telescope intended for work in the 115 nm to 315 nm wavelength range.[3] The launch had initially been planned for 2007, but has since been continually delayed;[4] as of February 2023, the launch is planned for the end of 2028[1] atop an Angara A5M rocket from Vostochny Cosmodrome.[2]


The main instrument of the observatory is a 1.7-metre Ritchey–Chrétien telescope. The telescope will be equipped with the following instruments:

WSO-UV Spectrographs Unit (WUVS) (Russia/Japan)

The WUVS spectrographs assembly consists of four channels:

WSO-UV Field Camera Unit (FCU) (Russia/Spain)

The FCU has two channels, each fed by an independent pick off mirror:

Proposed and former instruments



This section needs expansion with: text. You can help by adding to it. (August 2019)

In October 2012, tests of antennas for the space telescope were completed.[7]

In July 2019, INASAN selected the first seven experiments to be performed by the observatory.[8]

Participating nations

Spektr-UV is an international project led by Russia (Roscosmos). At present the international cooperation includes three basic participants: Russia (will provide the telescope, spacecraft, launch facilities, ground segment); Spain (FCU detectors, ground segment); Japan (UVSPEX).

See also


  1. ^ a b Zak, Anatoly. "Spektr-UF". RussianSpaceWeb. Retrieved 5 February 2023.
  2. ^ a b "Ученый рассказал о новом контракте на создание обсерватории "Спектр-УФ"" [Scientist discusses new contract for the creation of the Spektr-UV observatory]. RIA Novosti (in Russian). 2021-10-15. Retrieved 2021-10-15.
  3. ^ "World Space Observatory - Ultraviolet". WSO-UV (Spain). 2015. Retrieved 2016-10-25.
  4. ^ "World Space Observatory for the Ultra-Violet (WSO/UV)". Universität Tübingen. Retrieved 2010-03-15.
  5. ^ "WORLD SPACE OBSERVATORY – ULTRAVIOLET USER’S HAND BOOK" https://wso-jcuva.ucm.es/WSO.UsersBook_rev_es.pdf
  6. ^ Федеральное государственное бюджетное учреждение науки ИНСТИТУТ АСТРОНОМИИ РОССИЙСКОЙ АКАДЕМИИ НАУК Сборник трудов мемориальной конференции 2018 г., посвященной памяти академика А.А. Боярчука p.346-410 http://www.inasan.ru/wp-content/uploads/2018/12/Boyarchuk.pdf
  7. ^ "Завершены испытания антенн космического телескопа "Спектр-УФ"" [Testing of the antennas for the Spektr-UV space telescope has been completed] (in Russian). 2012-10-17. Retrieved 2019-10-22.
  8. ^ "Russian scientists have selected seven experiments for Spektr-UV space telescope project". TASS. 2019-07-06. Retrieved 2020-03-15.