Sky-Watcher USA

Sky-Watcher Evostar EDX 100 APO Doublet - S11145

Out of stock
SKU: SKY-S11145
$1,240.00 CAD
Product details
  • SKU SKY-S11145
Description

Sky-Watcher Evostar EDX100 APO Doublet Refractor Highlights

  • Limited Edition!
  • Doublet apochromatic optical design
  • Two-element, air-spaced optical assembly minimizes false color
  • 100mm aperture, 700mm focal length, f/7 focal ratio
  • FPL 53 glass
  • 2.8-inch dual-speed Crayford-style focuser
  • Thread-on dew shield
  • Aluminum tube coated with glossy, white metal-flake finish
  • Included accessories: Tube rings, 2.8-inch Crayford-style focuser, camera angle adjuster, thread-on dew shield, focuser adapter ring, spacer, 1.25 to 2-inch adapter, and a V-style dovetail

About the Sky-Watcher Evostar EDX Line of APO Doublets...

An Elegant Balance of Value and Performance

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 internal baffle prevent stray light from affecting your photography. Like the optics, the tube is beautifully crafted using aluminum and finished with a white metal-flake finish.

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

Sky-Watcher Evostar EDX refractors provide the finest images obtainable in their design class. These doublet refractors deliver dramatic, coal-black skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none. Sky-Watcher Evostar EDX refractors are the logical choice for the discriminating amateur astronomer looking for an investment in advanced instrumentation for exceptional viewing and astrophotography.

Evostars come in a foam-lined aluminum case with accessories, including: 2.8-inch Crayford-style focuser, tube rings, camera angle adjuster, thread-on dew shield, focuser adapter ring, spacer, 1.25 to 2-inch adapter, and a V-style dovetail.

Razor Sharp Optics

Sky-Watcher Evostar EDX refractors use the finest extra-low dispersion glass available. This results in the best color correction for an ED doublet lens.

Optical Specifications
Optical Design (achro or apo) Apochromatic
Lens Coating (fully multi-coated)? Fully multi-coated
Lens design (doublet, triplet or Quad) ED Doublet (Air Spaced)
ED Glass FPL-53
Optical Quality Diffraction limited (1/4 wave)
Collimatable Cell No (Self Aligning Cell)
Primary Aperture (mm) 100mm
F/Ratio 7
Focal Length (mm) 700mm

Optional Corrector/Reducer Specifications
Corrector Name Esprit 70EDX/Evostar 100EDX flattener
Optional Corrector/Reducer SKU S20216
Reduction (reducer only) 0.92x
Corrector - insertable or thread-on Thread on
Corrector Thread size M56x1 female/48mm male
Corrector Back Focus 55mm
Corrector illuminated field 43mm
F/Ratio with reducer installed 6.44
Focal Length with reducer installed 644mm
Corrector adapter needed? Included with telescope
Corrector allow for 2" filters? No
Mechanical Specifications
Focuser Type Crayford
Focuser Size 2.8"
Focuser: Dual or Single Speed Dual speed (11:1 ratio)
Focuser: Rotatable? No
Camera Angle Adjuster? Yes
Compression Ring Yes
Retractable dew shield? No* (Removeable (thread-on))
OTA material Aluminum
Optical Tube length Retracted/Extended (inches) 29.13" / 25.2"
Dew Shield diameter (mm) 5" (128mm)
Optical Tube weight with included accessories (pounds) 8.4 pounds
Mounting Rings? Yes
Dovetail type V-style
Dovetail length 8"
Mounting ring threads (upper holes) 1/4-20