The Byurakan Astrophysical Observatory, or Byurakan Observatory is an

astronomical Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies ...

observatory An observatory is a location used for observing terrestrial, marine, or celestial events. Astronomy, climatology/meteorology, geophysical, oceanography and volcanology are examples of disciplines for which observatories have been constructed. His ...

owned and operated by the

Armenian Academy of Sciences The National Academy of Sciences of the Republic of Armenia (NAS RA) ( hy, Հայաստանի Հանրապետության գիտությունների ազգային ակադեմիա, ՀՀ ԳԱԱ, ''Hayastani Hanrapetut’yan gitut’yunneri az ...

. It is located on the slope of

Mount Aragats Mount Aragats ( hy, Արագած, ) is an isolated four-peaked volcano massif in Armenia. Its northern summit, at above sea level, is the highest point of the Lesser Caucasus and Armenia. It is also one of the highest points in the Armenian ...

in the village of

Byurakan Byurakan ( hy, Բյուրական), is a major village in the Aragatsotn Province of Armenia, located on the slope of Mount Aragats. The village is home to several historical sites including the 7th-century Artavazik Church, the 10th-century bas ...

Armenia Armenia (), , group=pron officially the Republic of Armenia,, is a landlocked country in the Armenian Highlands of Western Asia.The UNbr>classification of world regions places Armenia in Western Asia; the CIA World Factbook , , and ''Ox ...

History

Founded in 1946 by

Viktor Hambardzumyan Viktor Amazaspovich Ambartsumian (russian: Виктор Амазаспович Амбарцумян; hy, Վիկտոր Համազասպի Համբարձումյան, ''Viktor Hamazaspi Hambardzumyan''; 12 August 1996) was a Soviet Armenians, Arm ...

, it was one of the main

astronomy Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...

centers of the USSR. The buildings were designed by architect Samvel Safarian. The hotel, central building and structures are for astronomical instruments. The observatory has discovered special

star cluster Star clusters are large groups of stars. Two main types of star clusters can be distinguished: globular clusters are tight groups of ten thousand to millions of old stars which are gravitationally bound, while open clusters are more loosely clust ...

s —

stellar association A stellar association is a very loose star cluster, looser than both open clusters and globular clusters. Stellar associations will normally contain from 10 to 100 or more stars. The stars share a common origin, but have become gravitationally u ...

s (1947), more than 1,000

flare star A flare star is a variable star that can undergo unpredictable dramatic increases in brightness for a few minutes. It is believed that the flares on flare stars are analogous to solar flares in that they are due to the magnetic energy stored in th ...

s, dozens of

supernova A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event occurs during the last evolutionary stages of a massive star or when ...

e, hundreds of

Herbig–Haro object Herbig–Haro (HH) objects are bright patches of nebula, nebulosity associated with newborn stars. They are formed when narrow jets of partially plasma (physics), ionised gas ejected by stars collide with nearby clouds of gas and dust at several ...

s and cometary nebulae, hundreds of

galaxies A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. ...

. The first conference was held in November 1951 on the topic of stellar associations. On 19 September 1956 a major meeting on non-stable stars was held. It has been the site of two major conferences on

SETI The search for extraterrestrial intelligence (SETI) is a collective term for scientific searches for intelligent extraterrestrial life, for example, monitoring electromagnetic radiation for signs of transmissions from civilizations on other p ...

, and is recognised as the regional center for astronomical research. Directors included V.A. Ambartsumian till 1988, E.Ye. Khachikian till 1993, H.A. Harutyunian from 1993 to 1994, and A.R. Petrosian from 1994 to 1999. Khachikian returned as director from 1999 to 2003 and Harutyunian also returned after this.

Equipment

Byurakan Observatory's main telescope is a 2.6 m

Cassegrain reflector The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to th ...

, along with a 1 and 0.5 m

Schmidt camera A Schmidt camera, also referred to as the Schmidt telescope, is a catadioptric astrophotographic telescope designed to provide wide fields of view with limited aberrations. The design was invented by Bernhard Schmidt in 1930. Some notable exa ...

as well as other smaller telescopes.

Results

The First Byurakan Survey commenced in 1965 using the

Schmidt telescope Schmidt may refer to: * Schmidt (surname), including list of people with the surname * Schmidt (singer) (born 1990), German pop and jazz singer * Schmidt (lunar crater), a small lunar impact crater * Schmidt (Martian crater), a crater on Mars * ...

. It revealed 1500 galaxies with ultraviolet excess known as the

Markarian galaxies The Markarian galaxies are a class of galaxies that have nuclei with excessive amounts of ultraviolet emissions compared with other galaxies. Benjamin Markarian drew attention to these types of galaxies starting in 1963. The nuclei of the galaxi ...

. These galaxies are designated "Markarian" or "Mrk" followed by a number, for example

Mrk 501 Markarian 501 (or Mrk 501) is a galaxy with a spectrum extending to the highest energy gamma rays. It is a blazar or BL Lac object, which is an active galactic nucleus with a jet that is shooting towards the Earth. In the very-high-energy gamma r ...

. The Second Byurakan Survey, 1974 to 1991, looked for emission line and ultraviolet excess galaxies, and quasars as well.

Gallery

Image:Byurakan 2.jpg, More telescopes at the Observatory File:Viktor Hambardzumyan museum in Byurakan.jpg, Viktor Hambardzumyan’s house in Byurakan, now museum File:100 Armenian dram - 1998 (reverse).png, Byurakan Observatory was featured on the reverse of the 100

Dram Dynamic random-access memory (dynamic RAM or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell, usually consisting of a tiny capacitor and a transistor, both typically based on metal-oxid ...

banknotes in 1998

References

External links