translation missing: en.products.notify_form.description: Notify me when this product is available: Sky-Watcher high-performance ED-APO refractors offer premium optical performance for the discriminating amateur astronomer. The result is high-quality, diffraction-limited optics performing to the theoretical limits of their respective aperture sizes. Fluorite also corrects well for spherical aberration. Olympus Mons, a volcanic crater 375-miles across and 16-miles high, is just one of the quests your capable SW120ED can tackle. On the north end of Mare Nubium, almost on the lunar N-S and E-W center line, you'll find 3 craters grouped together: Arzachel, a young impact crater 60 miles across and 13,000 feet deep, shows a terraced structure and a system of channel-like narrow depressions in its basin called rilles. ... That is, it is a slightly better performer than the 120ED Pro version than many of us on SGL own and use and are very happy with. Taks, APs, TECs, SVs, you get my drift. Read our 101 article or get in touch. Maybe no an expert but close enough for me. Refractors are coveted for their superb contrast, high-definition and coal-black sky background that make stars appear like diamonds embedded in black velvet. The finish is also very fine; sometimes I can't resist shining my red light flashlight on it and admiring it during imaging runs. Your SW120ED will provide an impressive view. Still not sure what is the right gear for you? I like the way it looks. Fluorite, CaF2, is a halide with unique properties and a hardness of only four. The draw tube is likewise baffled to insure optimum contrast. I have nothing negative to say about this scope except that the focuser is subpar for an instrument of this quality. I guess, the answer is either a mixture of the above, or something very different! Please Log in to save it permanently. Sky Watcher Evostar 120ED DS-Pro-Outfit. Olympus Mons, a volcanic crater 375-miles across and 16-miles high, is just one of the quests your capable SW120ED can tackle. These doublet refractors deliver dramatic, coal-black sk... Sky-Watcher EvoStar 80ED APO Refractor: Portable Optical Powerhouse!Due to their unobstructed textbook-like diffraction patterns and exotic optical... SW EvoStar 100ED APO Refractor: When You Demand the Best! I would suggest to any serious amateur astronomer that appreciates a quality refractor and who doesn't have a ton of money to spend to seriously consider investing in this scope - I'm glad I did. I have already gotten years of fine use out of it, and I hope that whoever else acquires it upon my passing will appreciate its craftsmanship (but fix the bloody focuser!) I enjoyed some nice views of Jupiter, the moon and some DSOs I'm having my attention on slightly bigger aperture and still portable refractor these days such as the SW Startravel 150 F/5. The only false color I see is atmospheric or eyepiece caused. I used it on a William Optics EZtouch mount (similar to aokswiss). Compact globular star clusters lend themselves well to a refractor. The raised triple-peaked central area is striking to observe in your Sky-Watcher 120ED telescope, with massive walls and a basin that is 14,000 thousand feet deep. For the money, the optics will apologize to almost no one. The dovetail is green. North of Tycho, appearing brightly in a basin, is the famous Rupes Rect (the Straight Wall), an 800-foot mountain that is a must see for amateur astronomers. Optical focus is achieved by means of a mechanically ultra-smooth, backlash-free, precision 2" Crayford-style rack & pinion focuser-assembly. We will be glad to help. Great price too! It is located south of Tycho. Schott is the recognized world leader in glass utilized for precision optical lens systems, including medical instrumentation and famous-brand camera lenses. There is no diffraction pattern interference caused by a diagonal mirror or secondary mirror being suspended in the optical path (central obstruction) as is the case with reflectors. Sky-Watcher APO refractors utilize a second lens element made from the mineral fluorite instead of Flint glass. Sky-Watcher utilizes only the very finest available fluorite lens, FPL-53. Nearby are Alphonsus, a 70 mile wide crater, and Ptolemaus, a prominent ancient crater 90 miles across with a heavily worn dark interior. Despite having the specs this is bigger than I imagined. The optical tube material is aluminum, powder-coated reflective gloss black with gold fleck accent. We know the amateur astronomer has very high expectations regarding astronomical equipment purchases. The Grand Canyon of Mars, Valles Mariners, dwarfs that of our Earth’s Grand Canyon, but it still requires superb optics to view even though it is 150 miles wide and 4 miles deep. Sky-Watcher Evostar 150ED DS-Pro - A busted flush? The telescope is supplied with a right-angle 9 x 50 mm viewfinder with bracket; a 2-inch dielectric diagonal; two 1.25-inch LE (Long Eye Relief) eyepieces (LE 20 mm and LE 5 mm); a 1.25-inch focuser adapter; tube ring attachment hardware for mounting to the Sky-Watcher EQ5PRO Mount (or other compatible mount), and a foam lined aluminum carry/storage case. Purchased the Sky-Watcher ED about 5 months ago with some hesitation.I had 8 Celestron Nexstar Cas. Mars is a challenge for amateur astronomers, but your SW 120ED will show some very interesting detail. Saturn’s storied surface phenomenon is simply stunning. At any rate, I'm still curious how it seems to have gone from hero to zero in the 'talked about' stakes. Again really glad i did not pay way more for an overpriced APO... this one does all you need to do, and nearly no CA. The superb capabilities of the Sky-Watcher 120ED provide performance on a par with a reflector of perhaps up to 7" in diameter on lunar, planetary, double-stars, globular star clusters, even the brighter nebulae. He would not specifically pronounce exactly how good without using a DPAC. I'm glad I got this one vs 150 size because its already say 15 lbs with accessories and 3 feet long, 150mm one is 4 feet long and 25 lbs with accessories. The 120ED. The result is high-quality, diffraction-limited optics performing to the theoretical limits of their respective aperture sizes. It is a perfect object to view with your Sky-Watcher 120ED. It functions as a high-index lens with very low dispersion. But he said it would not surprise him to find it was at LEAST 1/6th wave and maybe 1/8th or more. Tho it IS a case it almost falls apart (at least mine did). The gas giant Jupiter displays its swirling equatorial bands in high-definition with festoons and tonality within the bands. 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