Esprit 100EDX Super APO Triplet

Designed with the discerning astrophotographer in mind, Sky-Watcher’s top-of-the-line Esprit EDX refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more. With their three-element, air-spaced objective lens design and knife-edge baffles, false color is completely eliminated, yielding exceptional contrast and sharpness. The optional two-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive linear-track rack-and-pinion focusing system provides a smooth, rock-solid focuser with zero image shift. All Sky-Watcher Esprit EDX refractors come with mounting rings, dovetail plate, and foam-lined hard case. Everything you need to get out under the stars. SKU S11435 UPC 810098970716 Optical Specifications Optical Design (achro or apo) Super-Apochromatic Lens Coating (fully multi-coated)? Fully multi-coated Lens design (doublet, triplet or Quad) ED Triplet (Air Spaced) Optical Quality Diffraction limited (1/4 wave) Collimatable Cell Yes (Push/Pull Cell) Primary Aperture (mm) 100mm F/Ratio 5.5 Focal Length (mm) 550mm Optional Corrector Specifications Field Flattener or Reducer? Flattener Thread-On or Insertable Thread-On Corrector Thread size M65x1 female/M66x1 male Corrector Back Focus 63mm Corrector illuminated field 40mm Corrector adapter needed? Yes (Included with telescope) Corrector allow for 2" filters? No Optional Corrector/Reducer Specifications Mechanical Specifications Focuser Type Linear Rail Rack & Pinion Focuser Size 3.4" Focuser: Dual or Single Speed Dual speed (11:1 ratio) Focuser: Rotatable? Yes Camera Adjuster Yes Compression Ring Yes Drawtube thread size M74x1 Retractable dew shield? No OTA material Aluminum Optical Tube length Retracted/Extended (inches) 22.25" (fixed) Dew Shield diameter (inches) 5.7" Optical Tube weight with included accessories (pounds) 16 pounds Mounting Rings? Yes Mounting Ring hole thread size(s) 1/4-20 (top threads) Dovetail type D-style Dovetail length 6.75" Accessories Eyepieces No Diagonal None Handle Yes Mounting Hardware Mounting Rings/Dovetail Flatter or Corrector Optional Additonal Accessories None Collimation eyepiece No Included finder None Manual No (PDF online) Case Yes Case Dimensions 27.5"x16.5"x10.5" Shipping Weight 32 Shipping Dimensions/Weight 31"x20"x15" Observational Info Dawes Limit 1.16 Rayleigh Limit 1.4 Limiting Magnitude 12.5 Minimum Magnification 14x Maximum Magnification 197x Light Gather (compared to next size down) 204% (compared to Esprit 70EDX) Intended use Visual/Imaging