2022-23 Best deep sky

Sky-Watcher Evostar 120 ED APO doublet

With a 120mm aperture, 900mm focal length and f/7.5 focal ratio, the Evostar 120 ED APO doublet refractor is a perfect blend of superior extra-low dispersion glass and affordability.

The telescope

Sky-Watcher’s Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar refractor lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies. All ED glass elements are fluorite-based and feature our proprietary Metallic High-Transmission Coatings™ (MHTC™), virtually eliminating all false color while dual-baffles prevent stray light from affecting your photography. Like the optics, the tube is beautifully crafted using aluminum and finished with a black diamond metal-flake finish.

Using a doublet refractor over a triplet has some advantages: less glass means less weight, less weight means a less expensive mount, so you can dedicate more money for your camera or laptop while benefiting from a lightweight astrophotography rig.

All Evostar refractors come in a foam-lined aluminum case fully-loaded with accessories, including: 2-inch Crayford-style focuser, 2-inch dielectric diagonal, two 1.25-inch eyepieces (5mm and 25mm), an 8×50 right-angle finderscope, tube rings, and a Vixen-style dovetail.

The reducer/corrector

The 0.85x Focal Reducer/Corrector for Sky-Watcher Evostar 120 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher Evostar 120 ED APO, this superb quality accessory effectively reduces the telescope’s focal length by a factor of 0.85x and provides much improved field-edge correction. Features: