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Department store 50 mm Tasco Specialty Refractor on modified mount (lower left) and a 114mm Sky-Watcher reflector. Tasco's telescopes have a reputation as entry-level equipment. [2] [3] It is one of several companies advertising their products based on claims of high magnification, far beyond any attainable usable magnification. [2]
Sky-Watcher 114 mm EQ1 reflector (upper right) with Tasco refractor. 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.
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.
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] Perkins Observatory: 69 inch 175 cm: 1931–1964 USA: Wyeth 61" reflector [11] Oak Ridge Observatory: 61 inch 155 cm: 1933–2005 [12 ...
The Swedish 1-m Solar Telescope, with a lens diameter of 43 inches, is technically the largest, with 39 inches clear for the aperture.The second largest refracting telescope in the world is the Yerkes Observatory 40 inch (102 cm) refractor, used for astronomical and scientific observation for over a century.
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century by Isaac Newton as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic ...
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