There are three

radio telescopes A radio telescope is a specialized antenna and radio receiver used to detect radio waves from astronomical radio sources in the sky. Radio telescopes are the main observing instrument used in radio astronomy, which studies the radio frequency po ...

designated RT-70, all in countries that were once part of the former

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...

, all with similar specifications: 70m dishes and an operating range of 5–300 GHz. The Yevpatoria telescope has also been used as a radar telescope in observations of

space debris Space debris (also known as space junk, space pollution, space waste, space trash, or space garbage) are defunct human-made objects in space—principally in Earth orbit—which no longer serve a useful function. These include derelict spacecr ...

and

asteroids An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...

. With their 70m antenna diameter, they are among the largest radio telescopes in the world. They are: * the

Yevpatoria RT-70 radio telescope The Yevpatoria RT-70 radio telescope (P-2500, RT-70) is an RT-70 radio telescope and planetary radar at the Center for Deep Space Communications, Yevpatoria, Crimea. In the scientific literature is often called Evpatoria Planetary Radar (EPR). ...

at the former soviet

Center for Deep Space Communications The State Space Agency of Ukraine (SSAU; uk, Державне космічне агентство України, ''Derzhavne kosmichne ahentstvo Ukrayiny'', ДКАУ, ''DKAU'') is the Ukrainian government agency responsible for space policy a ...

or West Center for Deep Space Communications,

Yevpatoria Yevpatoria ( uk, Євпаторія, Yevpatoriia; russian: Евпатория, Yevpatoriya; crh, , , gr, Ευπατορία) is a city of regional significance in Western Crimea, north of Kalamita Bay. Yevpatoria serves as the administrative ...

Crimea Crimea, crh, Къырым, Qırım, grc, Κιμμερία / Ταυρική, translit=Kimmería / Taurikḗ ( ) is a peninsula in Ukraine, on the northern coast of the Black Sea, that has been occupied by Russia since 2014. It has a pop ...

( Russian-annexed, internationally recognised as part of

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...

) * the

Galenki RT-70 radio telescope The Galenki RT-70 radio telescope (Russian: Гaленkий РТ-70) is an RT-70 telescope at the East Center for Deep Space Communications, Galenki (Ussuriysk), Russia. With its 70m antenna diameter, it is among the largest single dish radio t ...

at the

East Center for Deep Space Communications East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the f ...

Galenki Galyonki (russian: Галёнки) is a rural locality (a '' selo'') in Oktyabrsky District of Primorsky Krai, Russia. Population: History It was founded in 1880.Приморский крайисполком. "Приморский край. � ...

(

Ussuriysk Ussuriysk (russian: Уссури́йск) is a types of inhabited localities in Russia, city in Primorsky Krai, Russia, located in the fertile valley of the Razdolnaya River, north of Vladivostok, the administrative center of the krai, and about ...

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

* the Suffa RT-70 radio telescope at the Suffa Radio Observatory on the Suffa plateau,

Uzbekistan Uzbekistan (, ; uz, Ozbekiston, italic=yes / , ; russian: Узбекистан), officially the Republic of Uzbekistan ( uz, Ozbekiston Respublikasi, italic=yes / ; russian: Республика Узбекистан), is a doubly landlocked cou ...

In 2008, RT-70 was used to beam 501 messages at the

exoplanet An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, init ...

Gliese 581c Gliese 581c (Gl 581c or GJ 581c) is a planet orbiting within the Gliese 581 system. It is the second planet discovered in the system and the third in order from the star. With a mass at least 5.5 times that of the Earth, it is classified as a ...

, in hopes of making contact with extraterrestrial intelligence. The messages should arrive in 2029.

References

External links

Yevpatoria RT-70 radio telescope
(in Russian)
Suffa RT-70 radio telescope
(in Russian)
Suffa Radio Observatory in Uzbekistan: progress and radio-seeing research plans

(mentions Galenki telescope) * Don P. Mitchel

Radio telescopes Soviet inventions {{SIA

See also

References

External links