Rozhen National Astronomical Observatory

Rozhen Observatory
Rozhen dome.jpg
Large Telescope Dome of the Rozhen Observatory
OrganizationBulgarian Academy of Sciences
Observatory code 071 Edit this on Wikidata
LocationNear Chepelare, Bulgaria
Coordinates41°41′33″N 24°44′17″E / 41.69250°N 24.73806°E / 41.69250; 24.73806
Altitude1759 m
Ritchey-Chretien-Coude telescope200 cm
Cassegrain telescope60 cm Cassegrain reflector
Schmidt telescope50/70 cm
Solar Coronagraph telescope15 cm
Rozhen Observatory is located in Bulgaria
Rozhen Observatory
Location of Rozhen Observatory
  Related media on Commons

Rozhen Observatory (Bulgarian: Национална астрономическа обсерватория - Рожен, НАО-Рожен; English: National Astronomical Observatory - Rozhen, NAO-Rozhen), also known as the Bulgarian National Astronomical Observatory, is an astronomical observatory, located in the Smolyan Province, 90 kilometers south of the city of Plovdiv, Bulgaria. The nearest town, Chepelare, is 15 kilometers away. The observatory is owned and operated by the Institute of Astronomy of the Bulgarian Academy of Sciences (BAS). It was officially opened on 13 March 1981, almost 20 years after Bogomil Kovachev – a professor of astronomy at BAS, known as its founder – had started working towards that goal.[1][2] The Observatory is the largest in Southeastern Europe[3] and has an active team of about 50 astronomers. It is the principal center for astronomical research in Bulgaria.[citation needed] The minor planet 6267 Rozhen, was discovered at, and named after the observatory.[4]

With its total cost of over $10 million at the time, it still remains to day the largest one-time investment in scientific infrastructure that Bulgaria ever made.[3]

Bogomil Kovachev, founder of the Rozhen Observatory, with a group of visiting Bulgarian scholars in the summer of 1987

WASP-3c & TTV[]

Transit Timing Variation (TTV), a variation on the transit method, was used to discover an exoplanet WASP-3c by Rozhen Observatory, Jena Observatory, and Toruń Centre for Astronomy.[6]

See also[]


  1. ^ : accessed 14 September 2015 (in Bulgarian)
  2. ^ image 53 of 66 : accessed 14 September 2015 (in Bulgarian)
  3. ^ a b : accessed 24 July 2020
  4. ^ Schmadel, Lutz D. (2007). "(6267) Rozhen". Dictionary of Minor Planet Names – (6267) Rozhen. Springer Berlin Heidelberg. p. 522. doi:10.1007/978-3-540-29925-7_5763. ISBN 978-3-540-00238-3.
  5. ^ "Telescopes".
  6. ^ Archived 28 July 2010 at the Wayback Machine "Planet Hunting: Finding Earth-like Planets"

External links[]