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Winter Constellations, taken from the Kottamia Astronomical Observatory, Cairo, Egypt, in December 2021. Kottamia Astronomical Observatory is the largest telescope in the Arab world, including the Middle East and North Africa. The telescope, which is located 80 km from the center of Cairo, has a main mirror diameter of about 1.88 meters. [1] [2 ...
Their first telescopes (4.5" (114 mm) -Newtonians) were distributed by Celestron and Tasco. In 1993, the first refracting telescopes were produced. In 1999, the brand Sky-Watcher was established by Synta Taiwan to sell optics produced by Suzhou Synta.
Sky-Watcher is a commercial distribution company established in 1999 by the Synta Technology Corporation of Taiwan (Synta Taiwan). It markets telescopes and astronomy equipment, such as mounts and eyepieces , aimed at the amateur astronomy market.
Synta Technology Corporation was founded in Taoyuan, Taiwan around 1980 by mechanical and optical designer Dazhong Shen, (a/k/a David Shen). In 1992 Synta, along with Canadian investors, established the Suzhou Synta Optical Technology Co., Ltd in Suzhou (Jiangsu), China (outside Shanghai) as a manufacturing facility producing telescopes for Celestron and Tasco.
This is a list of large optical telescopes. For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes . This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time.
The Madras Observatory was an astronomical observatory which had its origins in a private observatory set up by William Petrie in 1786 and later moved and managed by the British East India Company from 1792 in Madras (now known as Chennai). The main purpose for establishing it was to assist in navigation and mapping by recording the latitude ...
The stunning successes and discoveries made there using the world's largest telescopes, the 100-inch Hooker Telescope and 200-inch Hale Telescope, spurred the move to ever higher sites for the new generation of observatories and telescopes after World War II, along with a worldwide search for locations which had the best astronomical seeing.
The telescope has a F/3.25 paraboloid primary of 2.3 m diameter with the prime focus image scale of 27 arcsec/mm and a Cassegrain focus image scale of 6.7 arcsec/mm. This telescope has been operated as a national facility and attracts proposals from all over the country and sometimes from outside India.