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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.
LXD75, including Newtonian, Schmidt-Newtonian, Advanced Coma-Free, and achromatic refractor telescopes; ETX-LS, 150mm (6 in) and 200mm (8 in) F/10 ACF telescope on a single-fork arm with integral GPS and 'Eclips' camera for self-alignment. DS-2000 Series, 80mm (3.1") refractor, 114mm (4.5") and 130mm (5.1") reflector on altazimuth Goto mounts
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.
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 ...
Tasco is a major international distributor of telescopes. The company's line of products mainly target amateur astronomers but has grown to include many products besides telescopes. Tasco's other products include terrestrial spotting scopes, microscopes, binoculars, and telescopic sights and other rifle accessories. Tasco sells through ...
Multiple mirror telescopes that are on the same mount and can form a single combined image are ranked by their equivalent aperture. Fixed altitude telescopes (e.g. HET) are also ranked by their equivalent aperture. All telescopes with an effective aperture of at least 3.00 metres (118 in) at visible or near-infrared wavelengths are included.
The Telrad, a reflector sight for astronomical telescopes introduced in the late 1970s. Reflector sights have been used over the years in nautical navigation devices and surveying equipment. Albada type sights were used on early large format cameras, "Point and shoot" type cameras, and on simple disposable cameras. [30]
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