Affordable Astrophotography and Visual Astronomy Sky Watcher EvoStar 100 APO Doublet Refractor

For astronomers seeking to elevate their viewing experience with superior extra-low dispersion glass, the EvoStar series of apochromatic doublets from Sky-Watcher is a premier choice. Featuring a proprietary combination of matched lenses, the EvoStar ED refractor lens assembly is designed to deliver optimum visual and photographic performance. Even when observing bright planetary objects, the EvoStar ED refractor minimizes color fringing to deliver tack-sharp stellar images. Central to Sky-Watcher's color correction is their Metallic High-Transmission Coatings (MHTC), which eliminates virtually all false color. Additionally, all EvoStar ED refractor optical tubes have been light-baffled to minimize stray light, and the tube interior features a matte black finish to prevent light reflections from reaching the focal plane.

For visual astronomers seeking to venture into astrophotography, the Sky-Watcher EvoStar ED refractor series provides the perfect pathway to professional-level imaging without the need to break the bank. With fewer lens elements, the EvoStar ED refractors are lighter in weight, allowing for the use of a less beefy and less expensive mount. These savings can then be invested in a new camera or laptop to further enhance the astrophotography experience.

The Sky-Watcher EvoStar series comes equipped with rings and a dovetail, providing a ready-to-use setup that can be deployed at a moment's notice. The dual-speed Crayford-style focuser, featuring roller bearings, ensures precise focusing with minimal image shift. The 100mm EvoStar model also includes a right-angle 8x50mm viewfinder with bracket, a 2-inch dielectric diagonal, two 1.25-inch Long Eye Relief (LE) eyepieces (LET25mm and LET5mm), a 1.25-inch focuser adapter, and tube ring attachment hardware compatible with various mounts. To facilitate transport, the optical tubes are shipped with a foam-lined aluminum case.

The EvoStar series boasts expertly matched glass, featuring a doublet objective that includes one synthetic fluorite element, providing excellent color correction for both visual and photographic applications. Using the finest quality glass and Sky-Watcher's proprietary Metallic High-Transmission Coatings (MHTC), EvoStar refractors produce tack-sharp images with accurate color and minimal aberrations. Versatile enough to accommodate the evolving skill sets of both seasoned astrophotographers and budding novices, the EvoStar refractors can serve as a primary optical tube as your expertise grows. The 10:1 dual-speed Crayford-style focuser ensures smooth and precise focusing, no matter the eyepiece or camera used.

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