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  • We are glad to inform that a guideline for scientific working groups of Millimetron project is now available on the web-site. More information.



  • We are pleased to announce that an invitation to participate in the Millimetron Science Working Groups (MSWG) is now open! Scientific groups are to prepare short, but comprehensive descriptions of the important, unique science goals together with the description of the instruments concept, its sensitivity and resolution that would deliver with Millimetron the desired observational results. Read more...

Main Parameters of Millimetron Mission

Antenna diameter 10 m
Antenna construction  

solid, deployable and adjustable in orbit

Antenna surface accuracy (wave front error)             
6 μm RMS
Antenna surface temperature  < 10 K, mechanically cooled
Wavelength coverage 10 mm – 70 μm
Orbit Halo round Lagrangian L2 & Moon gravity assist  transit to elliptical orbit
Operational life time 10 year, including cryo >3 years
Two observing modes & instrumentation  Space Earth-VLBI 10 – 0.5 mm wavelength
Single dish 3 - 0.07 mm wavelength
Provisional launch date 2029
Mission status Approved by Russian Space agency

Millimetron Space Observatory



Millimetron space observatory (Spektr-M) is a project of Astro Space Center of Lebedev Physical Institute, Russian Academy of Sciences (ASC LPI). It will be a 10-meter space telescope designed to study various objects in the Universe at millimeter and infrared wavelengths from 0.07 to 10 mm. The observatory has two operational modes: the single-dish and Space-Earth interferometer. The first mode will have the best sensitivity to study the weakest sources of the Universe. The second mode will provide high angular resolution up to 10-8 – 10-9 arcseconds to study the structure of the most compact objects in the Universe – supermassive black holes.

High sensitivity is achieved by deep cooling of the telescope mirror system and on-board scientific payload. While, high angular resolution is provided by the orbit configuration. The observatory will be located near the Lagrange point L2 at a distance of 1.5 million kilometers from Earth in the anti-solar direction.

Scientific program of Millimetron space observatory is aimed to solve a set of the most important and breakthrough scientific problems in the field of modern astrophysics and cosmology, namely detailed study of black hole shadows, search for wormholes, water trail in the Galaxy, CMB spectral distortions.

Russian Federation leads the project; the state customer of Millimetron observatory is Roscosmos; the head of the project is Astro Space Center of Lebedev Physical Institute of Russian Academy of Sciences. Millimetron is included in the Russian Federal Space Program for 2016-2025 years.

The prime contractor for the development of spacecraft bus is Federal State Unitary Enterprise “Lavochkin Research and Production Association”. The prime contractor for the development of scientific payload and scientific program is Astro Space Center of Lebedev Physical Institute of Russian Academy of Sciences. JSC “Information Satellite Systems – Reshetnev Company” is responsible for the design of space telescope construction, including space antenna, assembly and testing of the scientific payload.