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Sky-Watcher Evostar EDX 80 APO f/7.5 Doublet Telescope

Sky-Watcher Evostar EDX 80 APO f/7.5 Doublet Telescope

by Sky-Watcher
SKU SW-S11135
CA$1,040.00 - CA$1,040.00
CA$1,040.00
CA$1,040.00 - CA$1,040.00
CA$1,040.00
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  • 80 mm Apochromatic ED Doublet Refractor
  • 600 mm Focal Length (f/7.5)
  • One Ohara FPL-53 ED Glass Element
  • Dual-Speed (11:1) 2-inch Crayford Focuser
  • 4 kg (8.8 lb) Optical Tube Weight
  • Retractable Dew Shield
  • Aluminum Carrying Case Included
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Framing Simulator
Framing SimulatorInstant FOV Preview

Preview your camera's FOV

See exactly how your targets fit with the Sky-Watcher Evostar EDX 80 APO f/7.5 Doublet Telescope, on real sky survey data.

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Visual Simulator
Visual SimulatorInstant FOV Preview

Preview your eyepiece's FOV

See exactly what the Sky-Watcher Evostar EDX 80 APO f/7.5 Doublet Telescope shows you, on real sky survey data.

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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Sky-Watcher Evostar EDX 80 APO f/7.5 Doublet Telescope

    The Sky-Watcher Evostar EDX 80 APO f/7.5 Doublet Telescope is an 80 mm apochromatic doublet refractor with a 600 mm focal length (f/7.5) and one Japanese Ohara FPL-53 ED glass element. Sky-Watcher presents it as an instrument for both imaging and visual use. The 4 kg (8.8 lb) optical tube is equipped with a backlash-free, dual-speed (11:1) 2-inch Crayford focuser, which includes a 2.8-inch indexed drawtube and a 360° rotatable adaptor.

    The Evostar 80EDX: An Apochromatic Doublet for Visual and Imaging

    The 80EDX keeps the f/7.5 matched optics of the earlier Evostar 80ED and adds mechanical upgrades: an enlarged 2.8-inch indexed focuser drawtube with a built-in 360° rotatable adaptor, a retractable dew shield and a carrying handle, in a white and green livery.

    Sky-Watcher supplies it without eyepiece, star diagonal and finderscope.

    80 mm f/7.5 Optics with Ohara FPL-53 ED Glass

    The 80 mm f/7.5 doublet objective includes one Japanese Ohara FPL-53 ED glass element to control chromatic aberration. The highest practical power is 240x.

    Each air-to-glass lens surface carries Sky-Watcher's Metallic High-Transmission Coatings (MHTC), and the aluminum tube is internally baffled.

    Visual Use

    The highest practical power is 240x. The drawtube adaptor accepts a 2-inch star diagonal, and a 2-inch to 1.25-inch adapter is included.

    For visual use, add a 2-inch star diagonal, at least one eyepiece and a finderscope; the finder shoe takes all Sky-Watcher finderscopes.

    Optional 0.85x Reducer/Flattener, 30 mm Image Height

    For imaging, Sky-Watcher offers an optional, optically matched 0.85x focal reducer/field flattener (code 20236), sold separately.

    With the optional reducer/flattener, the image height is 30 mm.

    The 2-inch, 11:1 Dual-Speed Crayford Focuser

    The 2-inch Crayford focuser is backlash-free and has dual-speed 11:1 fine focusing.

    • 2.8-inch indexed drawtube: enlarged on the EDX model.
    • 360° rotatable adaptor: built into the drawtube, for turning the camera or diagonal.
    • Diagonal adaptor: the drawtube adaptor accepts a 2-inch star diagonal; a 2-inch to 1.25-inch adapter is included.

    Mechanical Build: A 4 kg OTA with a 557 mm Extended Length

    The aluminum optical tube weighs 4 kg (8.8 lb) and measures 475 mm with the dew shield retracted.

    Extended, the retractable dew shield brings the length to 557 mm. The finderscope mounting shoe is compatible with all Sky-Watcher finderscopes.

    Tube Rings, 45 mm Dovetail and Aluminum Case

    The telescope comes with tube rings with a carrying handle and a 45 mm (Vixen-style) dovetail mounting bar, so choose a mount with a Vixen-style saddle and a payload rating that covers the 4 kg (8.8 lb) tube plus your camera and accessories. An aluminum carrying case is supplied for storage and transport.

    Doublet or Triplet

    Evostar ED doublets have long been a choice of many astrophotographers for their imaging performance and affordability.

    With less glass, they are usually lighter and more convenient to handle than a triplet or other multi-element ED refractor of the same aperture. The 80EDX tube weighs 4 kg (8.8 lb).

  • What mount do I need for the Sky-Watcher Evostar 80EDX?

    The optical tube weighs 4 kg (8.8 lb) and comes with a 45 mm Vixen-style dovetail bar, so choose a mount with a Vixen-style saddle and a payload rating that covers the tube plus your camera and accessories.

    What accessories do I need to start observing with the Evostar 80EDX?

    A 2-inch star diagonal, at least one eyepiece and a finderscope: Sky-Watcher supplies the telescope without them. The finder shoe takes all Sky-Watcher finderscopes, and a 2-inch to 1.25-inch adapter is included.

    Is there a reducer for imaging?

    Yes. Sky-Watcher offers an optional, optically matched 0.85x focal reducer/field flattener (code 20236). With it, the image height is 30 mm.

    Can I rotate my camera for framing with the Evostar 80EDX's focuser?

    Yes. The 2.8-inch drawtube has a built-in 360° rotatable adaptor for turning the camera or diagonal.

    What does the Ohara FPL-53 element do?

    It is the ED glass element in the doublet objective, used to control chromatic aberration.

    How heavy is the Evostar 80EDX?

    The tube weighs 4 kg (8.8 lb), measures 475 mm with the dew shield retracted and 557 mm extended, and comes with an aluminum carrying case.

    What is the advantage of the Evostar 80EDX's doublet design over a triplet?

    Doublets, with less glass, are usually lighter and more convenient to handle than a triplet of the same aperture. The 80EDX tube weighs 4 kg (8.8 lb).

    Can I use 1.25-inch accessories with the Evostar 80EDX?

    Yes. A 2-inch to 1.25-inch adapter is included.

    What are the main upgrades on the 80EDX compared to the older Evostar 80ED?

    The Evostar 80EDX retains the same 80 mm f/7.5 optics as the previous model but adds mechanical upgrades. These include an enlarged 2.8-inch indexed focuser drawtube with a built-in 360° rotator, a retractable dew shield, and a carrying handle on the tube rings.

    What is the highest practical power?

    The 80EDX's highest practical power is 240x.

  • UPC 810098970822
    Optical Design Apochromatic ED doublet refractor
    Aperture 80 mm
    Focal Length 600 mm
    Focal Ratio f/7.5
    ED Glass One Ohara FPL-53 ED element
    Coatings Metallic High-Transmission Coatings (MHTC)
    Focuser Dual-speed (11:1) 2-inch Crayford, backlash-free, 2.8-inch indexed drawtube with 360° rotatable adaptor
    Diagonal Adaptor Accepts 2-inch star diagonals
    Dew Shield Retractable
    Finder Shoe Sky-Watcher finderscope mounting shoe
    Mounting Tube rings with carrying handle, 45 mm (Vixen-style) dovetail bar
    OTA Length 475 mm dew shield retracted, 557 mm extended
    OTA Weight 4 kg (8.8 lb)
    Highest Practical Power 240x
    Optional Reducer/Flattener 0.85x focal reducer/field flattener (Sky-Watcher code 20236), image height 30 mm
    Internal Baffling Yes
    Case Aluminum carrying case

    • Evostar 80EDX Optical Tube Assembly

      × 1

    • Tube Rings with Carrying Handle (Pair)

      × 1

    • 45 mm Dovetail Bar

      × 1

    • 2-inch to 1.25-inch Adapter

      × 1

    • Aluminum Carrying Case

      × 1

  • Sky-Watcher 2-Year Warranty