Pulkovo Observatory in 1839Pulkovo Observatory in 1855. Ev. Bernardsky (1819–1889); Col. Woodcut
The observatory was opened in 1839.[3]
Originally, it was a brainchild of the German/Russian astronomerFriedrich Georg Wilhelm von Struve, who would become its first director[3] (in 1861, his son Otto Wilhelm von Struve succeeded him). The architect was Alexander Bryullov. The observatory was equipped with state-of-the-art devices, one of them being the a 15-inch (380 mm) aperture refractor, one of the largest refractors in the world at that time (see Great Refractor). In 1885, the observatory was equipped with 30-inch (760 mm) refractor, which was the biggest usable refractor in the world, until the 36-inch (910 mm) telescope at the Lick Observatory in California a few years later. Both were built by Alvan Clark & Sons in Massachusetts.[4]
The principal line of work of the observatory consisted of determination of coordinates of stars and astronomical constants, such as precession, nutation, aberration and refraction, and also discovering and measuring double stars. The observatory's activities have also been connected to the geographical study of the territory of Russia and development of navigation. The star catalogues, containing the most precise positions of 374, and then 558 stars, were made for the years 1845, 1865, 1885, 1905 and 1930.
Staff of the Pulkovo Observatory (1883–1886)
By the 50th anniversary of the Observatory, they had built an astrophysicallaboratory with a mechanical workshop and installed the Europe's largest refractor, (30 inch). Astrophysical research really gained momentum with the appointment of Feodor Bredikhin as a director of the Observatory in 1890 and transfer of Aristarkh Belopolsky from the Moscow Observatory, an expert in stellar spectroscopy and solar research. In 1923, they installed a big Littrowspectrograph, and in 1940 – a horizontal solar telescope, manufactured at a Leningrad factory. After having received an astrograph in 1894, the observatory began its work on astrophotography. In 1927, the Observatory received a zone astrograph and with its help the Russian astronomers catalogued the stars of the near-polar areas of the sky. Regular observation of movements of celestial poles began with the construction of the zenith telescope in 1904. In 1920, the Observatory started transmitting the exact time by radio signals. The observatory participated in the basic geodesic work, namely in measuring degrees of the arc of the meridian from the Danube to the Arctic Ocean (until 1851), and in triangulation of Spitsbergen in 1899–1901. Military geodesists and hydrographers used to work at the Observatory as interns. The Pulkovo Meridian, which passes through the center of the main building of the Observatory and is located at 30°19,6‘ east of Greenwich, was the point of departure for all former geographical maps of Russia.[5]
In order to observe the southern stars that could not be seen on the observatory's latitude, the scientists organized two affiliated observing locations. One of them was an astrophysical station in the Crimean town of Simeiz (Simeiz Observatory), which had been organized on the basis of a private observatory presented to the Pulkovo Observatory by an astronomy lover N. S. Maltsov in 1908. The other was an astrometric station in Mykolaiv – a former observatory of the Department of the Navy, (today's Nikolaev Astronomical Observatory).
Later history
During the siege of Leningrad (1941–1944), the Observatory became the target of fierce Germanair raids and artillerybombardment. All of the buildings were completely destroyed. Under dramatic circumstances, the main instruments were saved and stored safely in Leningrad, including the lens of the destroyed 30-inch refractor, and a significant part of the unique library with manuscripts and important works from the 15th to 19th century. On February 5, 1997, nearly 1,500 of the 3,852 books were destroyed by malicious arson and the rest of the library items were damaged by flames, smoke or water.[5][6]
The 65 cm Zeiss (25.59 inches) achromatic refractor of Pulkovo observatory
Even before the end of the war, the Soviet government made a decision to restore the Observatory. In 1946, it began the construction after having cleared the territory. In May 1954, the Observatory was re-opened, not only having been restored but considerably expanded in terms of instruments, employees and research subjects. New departments had been created, such as the Department of Radio Astronomy and Department of Instrument Making (with its own optical and mechanical workshop). The surviving old instruments were repaired, modernized and put into service once again. Also installed were new instruments, such as the 26-inch (660 mm) refractor,[4] a horizontal meridian device, a photographic polar telescope, a big zenith telescope, stellar interferometer, two solar telescopes, coronagraph, a big radio telescope and a variety of labware.
The 65 cm Zeiss refractor was originally intended as a gift from then Chancellor of GermanyAdolf Hitler to the Italian Benito Mussolini, but it was not delivered and instead was recovered by the Soviet Union.[7]
^Главная (Пулковская) астрономическая обсерватория Российской академии наук, Glavnaya (Pulkovskaya) astronomicheskaya observatoriya Rossiyskoy akademii nauk; De Benneville Randolph Keim (1887). Society in Washington. Harrisburg. p. 55.
