Dmitry Dmitrievich Maksutov
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Dmitry Dmitrievich Maksutov (; – 12 August 1964) was a
Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
optical engineer Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultravio ...
and
amateur astronomer Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes. Even though scientific research may not be their primary goal, some amateur astronomers m ...
. He is best known as the inventor of the
Maksutov telescope 250px, A 150mm aperture Maksutov–Cassegrain telescope The Maksutov (also called a "Mak") is a catadioptric telescope design that combines a spherical mirror with a weakly negative meniscus lens in a design that takes advantage of all the sur ...
.


Biography

Dmitry Dmitriyevich Maksutov was born in 1896 in either Nikolayev or the port city of
Odesa Odesa, also spelled Odessa, is the third most populous List of cities in Ukraine, city and List of hromadas of Ukraine, municipality in Ukraine and a major seaport and transport hub located in the south-west of the country, on the northwestern ...
,
Russian Empire The Russian Empire was an empire that spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917. At its height in the late 19th century, it covered about , roughl ...
. His father, was a naval officer serving with the
Black Sea Fleet The Black Sea Fleet () is the Naval fleet, fleet of the Russian Navy in the Black Sea, the Sea of Azov and the Mediterranean Sea. The Black Sea Fleet, along with other Russian ground and air forces on the Crimea, Crimean Peninsula, are subordin ...
, who came from a family with a long and distinguished naval tradition. His great-grandfather, Peter Ivanovich Maksutov, was given the title of prince, thereby raising the family to hereditary nobility as a reward for bravery in combat. His grandfather, Dmitri Petrovich Maksutov, was the last Russian governor of
Russian Alaska From 1732 to 1867, the Russian Empire laid claim to northern Pacific Coast territories in the Americas. Russian colonial possessions in the Americas were collectively known as Russian America from 1799 to 1867. It consisted mostly of present-d ...
, before it was purchased by the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
in 1867. Dmitri became interested in astronomy in early childhood, and constructed his first telescope (a 7.2 inch / 180 mm reflector) when he was twelve years old. Later he read publications by the Russian optician Alexander Andreevich Chikin (1865–1924), who became his teacher. He constructed a much better 10 inch (210 mm) reflector and began serious astronomical observation. At 15 years of age he had already been accepted as a member of the Russian Astronomical Society. Three years later he graduated from the Military Nikolayev Engineering Institute in what was then
Petrograd Saint Petersburg, formerly known as Petrograd and later Leningrad, is the second-largest city in Russia after Moscow. It is situated on the River Neva, at the head of the Gulf of Finland on the Baltic Sea. The city had a population of 5,601, ...
(a.k.a.
Saint Petersburg, Russia Saint Petersburg, formerly known as Petrograd and later Leningrad, is the List of cities and towns in Russia by population, second-largest city in Russia after Moscow. It is situated on the Neva, River Neva, at the head of the Gulf of Finland ...
), now the Saint Petersburg Military Engineering-Technical University. Between 1921 and 1930 he worked at the Physics Institute of the
University of Odessa The Odesa I.I.Mechnykov National University (), often referred to as Odesa National University ( ONU, ), located in Odessa, Odesa, Ukraine, is one of that country's major Public university, state-sponsored universities, named after the scientis ...
in the field of astronomical optics. In 1930 Maksutov established the Laboratory of Astronomical Optics at the
State Optical Institute State most commonly refers to: * State (polity), a centralized political organization that regulates law and society within a territory **Sovereign state, a sovereign polity in international law, commonly referred to as a country **Nation state, a ...
of
Leningrad Saint Petersburg, formerly known as Petrograd and later Leningrad, is the List of cities and towns in Russia by population, second-largest city in Russia after Moscow. It is situated on the Neva, River Neva, at the head of the Gulf of Finland ...
and led it until 1952. This laboratory was one of the leading astronomical research groups in the USSR. While there he published ''Анаберрационные отражающие поверхности и системы и новые способы их испытания'' berration-free reflective surfaces and systems and new methods of testing them(1932), in which he analyzed aplanatic double mirror systems and introduced the compensating method, which he proposed as early as 1924. This became the main control method of
mirror A mirror, also known as a looking glass, is an object that Reflection (physics), reflects an image. Light that bounces off a mirror forms an image of whatever is in front of it, which is then focused through the lens of the eye or a camera ...
study along with the shadow method. In 1944 he became a professor as a result of his paper, and from 1946 a Corresponding Member of the
USSR Academy of Sciences The Academy of Sciences of the Soviet Union was the highest scientific institution of the Soviet Union from 1925 to 1991. It united the country's leading scientists and was subordinated directly to the Council of Ministers of the Soviet Union (u ...
. From 1952 he worked in
Pulkovo Observatory The Pulkovo Astronomical Observatory (), officially named the Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, is the principal astronomical observatory of the Russian Academy of Sciences. It is located 19 km south ...
. Maksutov died in what was then Leningrad (a.k.a. Saint Petersburg) in 1964.


Inventions

Maksutov's most well known contribution in the field of optics was made in 1941, when he invented the
Maksutov telescope 250px, A 150mm aperture Maksutov–Cassegrain telescope The Maksutov (also called a "Mak") is a catadioptric telescope design that combines a spherical mirror with a weakly negative meniscus lens in a design that takes advantage of all the sur ...
. Like the
Schmidt telescope Schmidt may refer to: * Schmidt (surname), including list of people and fictional characters with the surname * Schmidt (singer) (born 1990), German pop and jazz singer * Schmidt (lunar crater), a small lunar impact crater * Schmidt (Martian c ...
, the Maksutov corrects for
spherical aberration In optics, spherical aberration (SA) is a type of aberration found in optical systems that have elements with spherical surfaces. This phenomenon commonly affects lenses and curved mirrors, as these components are often shaped in a spherical ...
by placing a corrector lens in front of the primary mirror. However, where the Schmidt uses an
aspheric An aspheric lens or asphere (often labeled ''ASPH'' on eye pieces) is a lens whose surface profiles are not portions of a sphere or cylinder. In photography, a lens assembly that includes an aspheric element is often called an aspherical lens. ...
corrector at the entrance pupil, Maksutov's telescope uses a deeply curved full diameter negative
meniscus lens A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), u ...
(a "
meniscus corrector shell A meniscus corrector is a negative meniscus lens that is used to correct spherical aberration in image-forming optical systems such as catadioptric telescopes. It works by having the equal but opposite spherical aberration of the objective it i ...
"). He published the design in 1944 in a paper entitled "Новые катадиоптрические менисковые системы" ew catadioptric meniscus systemsDmitri Maksutov: The Man and His Telescopes
by Eduard Trigubov and Yuri Petrunin.
This method was adopted not only by his own laboratory for many of the most important observatories in the Soviet Union, but also internationally. Several commercial telescope-making companies produce Maksutovs, including
Celestron Celestron, LLC is a company that manufactures telescopes and distributes telescopes, binoculars, spotting scopes, microscopes, and accessories manufactured by its parent company, the Synta Technology Corporation of Taiwan. History The predecessor ...
, Meade, and Questar. He created many
objective lens In optical engineering, an objective is an optical element that gathers light from an object being observed and focuses the light rays from it to produce a real image of the object. Objectives can be a single lens or mirror, or combinations of ...
es,
mirror A mirror, also known as a looking glass, is an object that Reflection (physics), reflects an image. Light that bounces off a mirror forms an image of whatever is in front of it, which is then focused through the lens of the eye or a camera ...
s, and
prism PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies. The program is also known by the SIGAD . PRISM collects stored internet ...
s of various sizes and purposes. He also created a photo-gastrograph (used for photographing the
stomach The stomach is a muscular, hollow organ in the upper gastrointestinal tract of Human, humans and many other animals, including several invertebrates. The Ancient Greek name for the stomach is ''gaster'' which is used as ''gastric'' in medical t ...
), a needle-
microscope A microscope () is a laboratory equipment, laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic ...
, shadow instruments for aerodynamic tubes, telescopic spectacles, and other instruments.


Awards

* Stalin Prize (1941, 1946) *two
Orders of Lenin The Order of Lenin (, ) was an award named after Vladimir Lenin, the leader of the October Revolution. It was established by the Central Executive Committee on 6 April 1930. The order was the highest civilian decoration bestowed by the Soviet ...
(1945,1958) *Order ''The Badge of Honour'' (1943) *''Grand Prix'' at the
Expo '58 Expo 58, also known as the 1958 Brussels World's Fair (; ), was a world's fair held on the Heysel/Heizel Plateau in Brussels, Belgium, from 17 April to 19 October 1958. It was the first major world's fair registered under the Bureau Internati ...
in
Brussels Brussels, officially the Brussels-Capital Region, (All text and all but one graphic show the English name as Brussels-Capital Region.) is a Communities, regions and language areas of Belgium#Regions, region of Belgium comprising #Municipalit ...


See also

*
List of astronomical instrument makers The following is a list of astronomical instrument makers, along with lifespan and country of work, if available. A B C D E F G H I J K L M N O P Q R S T U V ...
*
Albert Bouwers Albert A. Bouwers (1893–1972) was a Dutch optical engineer.Ian Ridpath, "Bouwers telescope", ''A Dictionary of Astronomy'', 199first sentence of article/ref> He is known for developing and working with X-rays and various optical technologies ...
– in 1940 independently invented a meniscus telescope similar to the Maksutov


References


External links


Biography
- on the website of ''Vavilov State Optical Institute''

{{DEFAULTSORT:Maksutov, Dmitri Dmitrievich 1896 births 1964 deaths Scientists from Odesa People from Odessky Uyezd Russian untitled nobility 20th-century Russian astronomers Soviet astronomers 20th-century Russian inventors Optical engineers Soviet inventors Military Engineering-Technical University alumni Recipients of the Order of Lenin Recipients of the Stalin Prize Russian scientists