Orion Telescope
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Orion Telescopes |
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| The Orion Premium 102mm F/7 ED Refractor is quite pricey at the price $999.95 but this is an excellent gastro-imaging scope. It has the premium 102mm ED and has a 714mm focal length and a fairly quick focal ratio of f/7.0. It has fully multicoated objective lens that has a component made of ED glass for exceptional color | |||||||||
correction. Also the machined aluminum 2-inch Crayford-style focuser presents ultra-smooth dual speed focusing. Orion astronomy telescope has a quality stamped on it and it is fully multicoated, air-spaced 102mm doublet objective which has one element made from extra-low dispersion optical glass for awesome precision. It has all the features to revolutionize the way of viewing images and observing. This surely delivers decades of reliable performance. The Orion Premium 102mm F/7 ED Refractor is manufactured specifically for astronomy and terrestrial use. Its optical diameter is 102mm and its focal length is 714mm while its focal ration is 7.0. The optics type is air-spaced doublet and the glass material utilized is extra low dispersion. The resolving power is 1.14arc*sec. The lowest useful magnification is 15 times while the highest useful magnification is 204 times. The limiting stellar magnitude is 12.7 and the optical quality is diffraction limited. Its astro-imaging capability can allow the user to view the lunar, planetary and long exposure. The length of the optical tube is 23 inches and weighs 8.1 lbs. It has tube rings (114mm ID) included (2 rings), Dovetail mounting plate: 8 inches, 1.25 inches eyepiece adapter, dovetail base for finder. This comes with one year warranty.
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