The Astronomical Observatory of Belogradchik or Belogradchik Observatory is an astronomical observatory owned and operated by Bulgarian Academy of Sciences. It is located near the town of Belogradchik in northwestern Bulgaria. The Bulgarian Academy of Sciences (abbreviated BAS, in Bulgarian: Balgarska akademia na naukite, abbreviated BAN) is the National Academy of Bulgaria, established in 1869. ... Belograchik (Bulgarian Белоградчик) is a town in Northwestern Bulgaria. ... This article is about the unit of length. ... A foot (plural: feet or foot;[1] symbol or abbreviation: ft or, sometimes, ′ – a prime) is a unit of length, in a number of different systems, including English units, Imperial units, and United States customary units. ... Year 1961 (MCMLXI) was a common year starting on Sunday (link will display full calendar) of the Gregorian calendar. ... Carl Zeiss in middle age. ... The Forststernwarte Jena 50cm Cassegrain telescope. ... Celestron is a company that makes and imports telescopes, binoculars, spotting scopes, microscopes, and accessories for their products. ... For other uses, see Astronomy (disambiguation). ... This article is about scientific observatories. ... The Bulgarian Academy of Sciences (abbreviated BAS, in Bulgarian: Balgarska akademia na naukite, abbreviated BAN) is the National Academy of Bulgaria, established in 1869. ... Belograchik (Bulgarian Белоградчик) is a town in Northwestern Bulgaria. ...

History

Built in 1961 by a group of astronomy enthusiasts led by high school physics teacher Hristo Kostov, Belogradchik Observatory became the first school observatory in Bulgaria. From 1964 to 1971 it was used as an auxiliary observation base. In 1974, Bugarian Academy of Sciences took over operation. Year 1961 (MCMLXI) was a common year starting on Sunday (link will display full calendar) of the Gregorian calendar. ... Also Nintendo emulator: 1964 (emulator). ... Year 1971 (MCMLXXI) was a common year starting on Friday (link will display full calendar) of the 1971 Gregorian calendar, known as the year of cyclohexanol. ... Year 1974 (MCMLXXIV) was a common year starting on Tuesday (link will display full calendar) of the 1974 Gregorian calendar. ...

Equipment

The observatory started out with a single 15 cm Cassegrain telescope, then added on an 60 cm Cassegrain telescope in 1965. In 1994 another telescope was added, a 14 inch Schmidt-Cassegrain model. A centimetre (American spelling centimeter, symbol cm) is a unit of length that is equal to one hundredth of a metre, the current SI base unit of length. ... The Forststernwarte Jena 50cm Cassegrain telescope. ... Year 1965 (MCMLXV) was a common year starting on Friday (link will display full calendar) of the 1965 Gregorian calendar. ... Year 1994 (MCMXCIV) The year 1994 was designated as the International Year of the Family and the International Year of the Sport and the Olympic Ideal by the United Nations. ... An inch (plural: inches; symbol or abbreviation: in or, sometimes, ″ - a double prime) is the name of a unit of length in a number of different systems, including English units, Imperial units, and United States customary units. ... Schmidt-Cassegrain The Schmidt-Cassegrain, invented by Bernhard Schmidt, is similar to the Cassegrain. ...

External links

• Official website