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Štefánikova hvězdárna online
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Information in English

Introduction

The Štefánik Observatory is located in the very heart of Prague, in Petřín's parks at the Hunger Wall which was built during the reign of Charles IV in the 14th century. The observatory was opened on June 24th, 1928. In the middle of the 70s, a full-scale reconstruction gave the building its current appearance and it was reopened for the public in 1976. Since 1979, the Štefánik observatory has been a part of the Observatory and Planetarium of Prague.

Milan R. Štefánik, born 1880 in Slovakia, was a soldier, a general of the French army, a pilot, a diplomat and the co-founder of the Czechoslovakian state. He was also a scientist and an astronomer. Štefánik studied astronomy at Prague's Charles University, worked in the observatory in Meudon close to Paris, participated in many expeditions to solar eclipses all around the world, built an observatory in Tahiti and was awarded several scientific prizes. He died in an air crash in 1919.

The observatory has three domes and one observation lodge. The domes are named according to their approximate position in the building (Western, Main and Eastern).

In the Western Dome, the Maksutov - Cassegrain mirror telescope has been in place since 1976. The diameter of the main mirror is 370 mm. Its magnification power for observation varies from approx. 80 to 330 times. The total weight of the telescope is 2.5 tons.

The Main Dome hosts a double Zeiss astrograph, named after the Viennese selenographer Koenig. It was built in the years 1905 - 07 for this baron, who used it mainly for Moon mapping and sky photography. After Koenig's death in 1929 it was bought and placed here. The total weight of the telescope is 5.5 tons and the pillar of this instrument is 15 meters high, of which 7.5 meters are sunk in the ground.

The Eastern Dome is currently used only for scientific observation and since 1999 has been equipped with a 40 cm mirror telescope by Meade.

Nowadays the observatory specializes above all in popularization of astronomy and related natural sciences. Undoubtedly the most interesting thing the observatory can offer are public daytime and nighttime observations of the sky which are run whenever the weather is suitable during the whole year.

Observatory visit

Our observatory offers a modern permanent astronomical exhibition reviewing the basics of astronomy. You can visit the domes with telescopes. In suitable weather it is possible to observe the sky. Our English-speaking employees and co-workers will be ready to answer your questions.

During the day we observe the Sun. The telescope in the main dome enables us to observe the solar disk, with sunspots as well as solar flares, through a chromospheric telescope. At nighttime, observation focuses on the Moon and the planets of the Solar System when they are most visible. It is also possible to look beyond the boundaries of the Solar System and observe selected stars, nebulas, star clusters or galaxies.

For groups giving advance notice, we can arrange a showing in English of the movie The Universe Near and Distant. This audiovisual presentation is about our closest surroundings, the Solar system, as well as distant galaxies.

Opening hours

MONTH MondayTuesday - Friday Saturday, Sunday
January
18 - 20 11 - 20
February 18 - 20 11 - 20
March 19 - 21 11 - 18, 19 - 21
April 14 - 19, 21 - 23 11 - 19, 21 - 23
May 14 - 19, 21 - 23 11 - 19, 21 - 23
June 14 - 19, 21 - 23 14 - 19, 21 - 23 11 - 19, 21 - 23
July 11 - 19, 21 - 23 14 - 19, 21 - 23 11 - 19, 21 - 23
August 11 - 19, 21 - 23 14 - 19, 21 - 23 11 - 19, 21 - 23
September 14 - 18, 20 - 22 14 - 18, 20 - 22 11 - 18, 20 - 22
October 19 - 21 11 - 18, 19 - 21
November 18 - 20 11 - 20
December 18 - 20 11 - 20

 

Admision

For family discount, 1-2 adults and 1-4 children up to 15 years of age can apply.
Students are kindly asked to present a valid student identity card.

Getting here

See map.

 

Contact

Adress: Štefánikova hvězdárna, Petřín 205, 118 46 Prague 1, Czech Republic
Phone number: +420 257 320 540
E-mail: informace@observatory.cz

The founder of the observatory and planetarium is the capital city of Prague.

Hvězdárna a planetárium hl. m. Prahy
Praha Zřizovatel hl.m.Praha
Statut Hvězdárny a planetária hl. m. Prahy
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