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In 1932 a 10.5-inch (270 mm) reflector telescope was added to the observatory as well as a spectroheliokinematograph {spectro-helio-kine-mato-graph}. This instrument was designed to take motion pictures of the Sun. [ 1 ] The McMath-Hulbert Solar Observatory is primarily known for the motion pictures that the McMaths made of various celestial ...
Besides selling under its "Meade" brand name, the company sells solar telescopes under the brand "Coronado". [4] In July 2024, Sky and Telescope magazine reported that Optronic Technologies, the owner of Meade Instruments and Orion Telescopes, had closed their facilities in California and had laid off all of their employees.
Solar telescopes often have multiple focal lengths, and use a various combination of mirrors such as coelostats, lenses, and tubes for instruments including spectrographs, cameras, or coronagraphs. There are many types of instruments that have been designed to observe Earth's Sun, for example, in the 20th century solar towers were common.
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Hale Telescope Palomar Obs. 200 inch 508 cm 1949 USA: Hooker Telescope Mount Wilson Obs. 100 inch 254 cm 1917 USA: McDonald Obs. 82 inch i.e. Otto Struve Telescope: 82 inch 208 cm 1939 USA: David Dunlap Observatory: 74 inch 188 cm 1935 Canada: Plaskett telescope Dominion Astrophysical Obs. 72 inch 182 cm 1918 Canada: 69-inch Perkins Telescope [10]
The telescope was inaugurated as the world's premier high spatial resolution optical solar telescope in 1969. With a horizontal rotating 40-foot-diameter (12 m) observing platform, such that instruments do not have to be mounted on the telescope itself, the Dunn Solar Telescope continues to offer a versatile, user-friendly setup.