Sky-Watcher Esprit 100mm ED Triplet APO Designed with the discerning astrophotographer in mind, Sky-Watcher’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more. With the Esprit’s three-element, air spaced objective lens design, false color is virtually eliminated, yielding exceptional contrast and sharpness. Each element is fully multi-coated with Sky-Watcher’s proprietary Metallic High-Transmission Coatings™ (MHTC)™, producing a transmission rate that rivals any refractor on the market. In addition to superb optics, all Esprits feature exclusive dual-speed, Helinear track focusers, which provide smooth, rock-solid focusing with zero image shift. Using a captain’s wheel design all focusers can be rotated, giving astrophotographers flexibility when framing their image. As is customary, Sky-Watcher supplies everything you need to get out under the stars, including a 2-element field corrector, which guarantees a flat field across the entire imaging plane. All Esprit refractors also come with an 8x50 right angle finderscope, 2-inch star diagonal, M48 camera adapter, mounting hardware, and padded case. Triplet super-apochromatic design Three-element, air-spaced optical assembly virtually eliminates false color 100mm aperture, 550mm focal length, f/5.5 focal ratio 3.4-inch dual-speed rack-and-pinion, Helinear track focuser Rolled steel optical tube with white, glossy finish Included accessories: field flattener, tube rings, D-style dovetail, 8x50 right-angle finderscope, M48 camera adapter, 2-inch dielectric diagonal, and padded hard case Technical Specifications Optical Info Optical Design ED Triplet Refractor Lens Coatings Fully Multi-Coated Glass Type BK7 (2)/FPL-53(ED) Primary Aperture (mm) 100 F/Ratio 5.5 Focal Length (mm) 550 Observational Info Dawes Limit 1.16 Rayleigh Limit 1.4 Limiting Mag. 12.5 Minimum Magnification 14 Maximum Magnification 197 Light Gathering (compared to next size down) 56% General Info Focuser 3.4" Dual Speed R&P OTA Length (Retract/Ext.) 18.3"/24.5" OTA Outer Diameter 5.75" OTA Weight (with accessories) 16 Accessories Included Finder 8x50 RACI Included Diagonal 2" Dielectric Mounting Accessories Rings/D-Rail Included Eyepieces None Included Case Yes Corrector Yes In the Box Sky-Watcher Esprit 100mm ED Triplet APO Field Flattener Tube Rings D-style Dovetail 8x50 Right-Angle Finderscope M48 Camera Adapter 2-inch Dielectric Diagonal Padded Hard Case Warranty & Manuals Sky-Watcher 2-Year Warranty
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