This rotation technique is sometimes used to make paraboloidal mirrors for astronomical telescopes, and has also been used for solar cookers.
22.
Using balloon observation, he studied cosmic X-rays in the 20-200 keV range and the secondary background properties of X-ray astronomical telescopes.
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Their results helped to determine the usefulness of orbiting astronomical telescopes and furnished clues to the history of the solar system.
24.
Ever since Galileo took a Dutch invention and adapted it to astronomical use, astronomical telescope making has been an evolving discipline.
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He was a co-owner of Carl Zeiss AG, a German manufacturer of research microscopes, astronomical telescopes, planetariums and other optical systems.
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The reusable Space Flyer Unit was launched on its inaugural flight last March with 11 experiments, including a NASA astronomical telescope.
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Other areas of work : Wrote a book on Hydroponics and developed a cost-effective method for producing parabollic mirrors for astronomical telescopes.
28.
The latest proposed extremely large astronomical telescopes, such as the Thirty Meter Telescope and the European Extremely Large Telescope, will be of segmented design.
29.
Galileo Galilei ( 1564-1642 ) made the first complete astronomical telescope and used it to gather evidence that the Earth revolved around the sun.
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He also installed the first astronomical telescopes in Caracas, where the Cajigal Observatory ( " El Observatorio Cajigal " ) was later established in 1888.
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