Sky-Watcher Evostar 100EDX 100mm (4") F/700 ED Doublet Apochromatic Refractor Telescope

The Evostar-100ED apochromatic doublet refractor has received some exciting mechanical upgrades as well as an optical redesign. We are pleased to introduce the new EVOSTAR-100EDX model, which is the result of several very useful mechanical improvements, and a change in its focal ratio from f/9 to a much faster and more imaging-friendly f/7. Presented in its stunning new white and green livery, the EVOSTAR-100EDX is a superb instrument for both imaging and visual use, with the necessary accessories.

The new EVOSTAR-100EDX model includes an enlarged 2.8" indexed focuser drawtube with a built-in 360° rotatable adaptor, a retractable dew shield and a top rail which conveniently doubles as a carrying handle.

Now featuring f/7 matched optics including one premium Japanese Ohara FPL-53 ED glass lens element which virtually eliminates chromatic aberration. An optional optically matched 0.92x Focal Reducer/Field Flattener (code SW_20332) is available for imaging.

The optics deliver tack-sharp stars with charcoal-black, contrast-rich skies. Each air-to-glass lens surface has exotic anti-reflection metallic coatings applied, to ensure optimum light throughput of approaching 99.5%!! The proprietary Sky-Watcher Metallic High-Transmission Coatings (MHTC) are the finest photon anti-rejection coatings in their class.

Apochromatic Refractors, due to their unobstructed, text-book like diffraction patterns, produce the sharpest, highest quality optical imaging available, bar-none, aperture for aperture, of any telescope optical system.

For a long time, Evostar-ED doublets have been the imaging refractors of choice for many astrophotographers due to the combination of their excellent imaging performance and affordability. Due to less glass in their construction, they are also usually much lighter weight and more convenient to handle than an equivalent aperture triplet or other multi-element ED refractor designs.

Please note: Supplied without eyepiece, star diagonal & finderscope.

Specifications

• Highest Practical Power (Potential): x300
• Objective Lens Diameter: 100mm
• Telescope Focal Length: 700mm (f/7)
• Dual-Speed 11:1 2” Crayford Focuser (Backlash-Free)
• 2.8" Indexed Focuser Drawtube with 360º Rotatable Adaptor
• Multi-Coated Objective Lens with MHTC coatings
• Image Height 40mm
• Retractable Dew Shield
• Drawtube Adaptor to accept 2" Star Diagonal
• Finderscope Mounting Shoe (compatible with ALL Sky-Watcher finderscopes)
• Supplied with Tube Rings with Top Rail
• 45mm Dovetail Mounting Bar
• Aluminium OTA with Internal Baffling
• OTA Length: 570mm (dewshield retracted), 675mm (dewshield extended)
• Weight of OTA: 5.5kg
• Aluminium Carrying Case