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 date2030 (proposed)[1]
RocketAngara A5M[2]
Launch siteVostochny Site 1A
Main telescope
Wavelengths115 to 315 nm
Spektr program

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][4] It is an international project led by Russia (Roscosmos), with participation from Spain and Japan. The launch had initially been planned for 2007, but has since been continually delayed;[5] as of December 2023, the launch is expected to take place no earlier than 2030[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.[8]

In July 2019, INASAN selected the first seven experiments to be performed by the observatory.[9]

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 "В Институте астрономии РАН заявили, что обсерваторию "Спектр-УФ" не запустят до 2030 года" [The Institute of Astronomy of the Russian Academy of Sciences said that the Spektr-UV observatory will not be launched until 2030]. TASS (in Russian). 21 December 2023. Retrieved 27 December 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. ^ Zak, Anatoly (30 December 2022). "Spektr-UF". RussianSpaceWeb. Retrieved 5 February 2023.
  4. ^ "World Space Observatory - Ultraviolet". WSO-UV (Spain). 2015. Retrieved 2016-10-25.
  5. ^ "World Space Observatory for the Ultra-Violet (WSO/UV)". Universität Tübingen. Retrieved 2010-03-15.
  6. ^ "WORLD SPACE OBSERVATORY – ULTRAVIOLET USER’S HAND BOOK" https://wso-jcuva.ucm.es/WSO.UsersBook_rev_es.pdf
  7. ^ 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
  8. ^ "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.
  9. ^ "Russian scientists have selected seven experiments for Spektr-UV space telescope project". TASS. 2019-07-06. Retrieved 2020-03-15.