This ED element produces superior sharpness and color correction by minimizing the chromatic aberration, the "false" color fringing seen around bright objects when light rays pass through standard crown-and-flint doublet objectives. Light, nice optics, easy to move about while mounted, what's not to like. The EvoStar 120mm f/7.5 Doublet APO Refractor from Sky-Watcher features a doublet apochromatic lens system with Extra-low Dispersion (ED) glass and Sky-Watcher's proprietary photon anti-rejection Metallic High-Transmission Coatings (MHC) on all air-to-glass optical surfaces. I have a 150 mm refractor that I call my Yard Cannon, I call this one my Yard Bazooka, much more manageable moving in and out of the house and the images, while smaller than the 150 are sharper with better contrast - making details really stand out! To the southeast, the famous crater Theophilus is 65 miles across. Classical long focal ratio apochromatic refractors, such as the f/7.5 Sky-Watcher EvoStar 120mm ED refractor deliver both high contrast and tack sharp images. Saturn’s storied surface phenomenon is simply stunning. Having owned several APO refractors, I am impressed with the views and image contrast this scope provided. This 120mm Sky-Watcher Evostar 120ED is a premium doublet apochromatic refractor with highly-reviewed high contrast/high resolution optics that Sky & Tel said were on a par with scopes costing three times its price . The Sky-Watcher EvoStar 120mm ED Doublet APO Refractor is an excellent choice for planetary observing and also has enough aperture to also reveal many deep space objects. Named after the famous Danish astronomer Tycho Brahe, it is a spectacular sight with very high-rimmed walls. This Sky-Watcher Evostar 120ED apochromatic refractor has: • 120mm f/7.5 apochromatic doublet optics using an ED element. Sky-Watcher has been delivering consistent satisfaction for over a decade. This is a cannon. The 2" diagonal has 99% reflectivity dielectric mirror coatings for high light transmission. M92, in the Constellation Hercules, is very compact globular with a bright core. Compact globular star clusters lend themselves well to a refractor. Shipping/storage case: The scope comes in foam-fitted aluminum-clad shipping/storage case. M4, M10 and many other globular clusters can be seen well with the SW 120ED-APO refractor. My only complaint is with the focuser in that I found it to be difficult to get and maintain a precise focus. JavaScript seems to be disabled in your browser. Get one! 10 Review(s) The front and back cells are cast-aluminum painted white or black. You could pay $100s or $1000s more and IMO all you'll get is higher quality accessories or build quality. The SW 120ED will show you this detail like you want to see it. In a given aperture size, refractors will always exhibit sharper images than other optical designs because the refractor concentrates more light into the central airy-disk and first diffraction rings. A slip-on metal dust cap is standard. Subtle details pop as never seen before in telescopes of lesser optical capability. This results in the best color correction for an ED doublet lens. Internal light baffles: Contrast-enhancing internal light baffles in the tube and focuser drawtube and a specially darkened tube interior provide dark sky backgrounds and high terrestrial contrast. We have only featured a relative few examples of what is available. The Sky-Watcher Evostar 120ED uses a crown glass element, an ED glass element, and state-of-the-art optical multicoatings in its apochromatic ED doublet optics. Purchased this one in 2018 right before the price increase and I must say optically it rocks! Maybe better. Hoping someday to move up to a triplet, but until then, this is my most versatile scope. Virtually Eliminates Residual Chromatic Aberration. The Sky-Watcher APO optical tubes come with attachment hardware that allows them to be securely fastened to compatible mounts. My only complaint is the 2" Crayford-style focus mount. Overall, a great value for the money. In addition, there is no loss in contrast such as you will find in reflector and catadioptric scopes that have a secondary or diagonal mirror hanging in the light path to scatter light.. Sky-Watcher ED-APOs – the Ultimate Refractors. The objective lens cell is light-baffled to reject stray, unfocused light. Aldebaran, a beautiful orange giant in the Constellation Taurus is a delightful sight to view with the SW 120ED. Finderscope: The Sky-Watcher Evostar 120ED comes with an 8 x 50mm right-angle finderscope that is fully-multicoated to insure maximum brightness and contrast. The result is to reduce spurious color halos and fringing to vanishingly low levels. The quick-release tube rings provided with SW ED-APO models 80ED, 100ED and 120ED are cast-aluminum, painted white. 4.6 out of 5 stars 87 ratings | 102 answered questions Available from these sellers. View the rings and clearly see Cassini’s Division and cloud belts across its equator. Pride and Perfection in Optical Manufacturing. Overall, even with the current price, a great bang for the buck. This focuser offers 2-speed fine and ultra-fine focusing adjustments. Nice Airy disks and concentric diffraction rings inside and outside of focus. Sky-Watcher ED-APO refractors provide the finest images obtainable – bar none – in their design class. Such mounts include the Astro-Tech Voyager altazimuth II and the Celestron AVX Advanced Series go-to equatorial, among others. Mars is a challenge for amateur astronomers, but your SW 120ED will show some very interesting detail. The Sky-Watcher Evostar 120ED uses a crown glass element, an ED glass element, and state-of-the-art optical multicoatings in its apochromatic ED doublet optics. EvoStars are also supplied with right-angle 8x50mm viewfinder with bracket; 2” dielectric diagonal; two 1.25” LE (Long Eye relief) eyepieces (LET20mm and LET5mm); 1.25” focuser adaptor; and tube ring attachment hardware that works with compatible mounts. . The crater has massive walls and the basin is 14,000 feet deep. 25% Off: Sky-Watcher EvoStar 120ED / ProED 120 120mm Doublet APO Refractor Telescope Optical Tube Assembly MFR: S11130. And IMO all you 'll get is higher quality accessories or build quality aperture sizes as the Sky-Watcher. Triplet, but until then, this is my most versatile scope | Add your Review and this Telescope better. This detail like you want APO quality images with great contrast insure optimum contrast planetary and deep-space phenomenon are! 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Appears like a gold sparkler and its companion looks like a veritable space-walk 5 stars 87 ratings | answered... 120 mm ED-APO refractor will provide a crisp well defined image on with!

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