Sky-Watcher ProED 120mm f/7.5 Doublet APO Refractor (OTA only)

Sky-Watcher ProED 120mm f/7.5 Doublet APO Refractor (OTA only)

Sky-Watcher ProED 120mm f/7.5 Doublet APO Refractor (OTA only)

B&H # SKPRO120EDAP MFR # S11130

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Product Highlights

  • 120mm Apochromatic Refractor
  • 900mm Focal Length, f/7.5 Focal Ratio
  • Proprietary MHC Multi-Coated Optics
  • Schott BK7 and FPL-53 ED Glass
  • 2" Crayford Focuser with 1.25" Adapter
  • 20mm and 5mm Eyepieces, 90° Diagonal
  • 8x50 RA Erect-Image Finderscope
  • Vixen-Style Dovetail Plate & Cradle-Ring
  • Foam-Lined Aluminum Carrying Case
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Sky-Watcher Pro 120ED APO overview

  • 1Description

The ProED 120mm f/7.5 Doublet APO Refractor from Sky-Watcher features a doublet apochromatic lens system with Extra-low Dispersion (ED) glass and Sky-Watcher's proprietary photon anti-rejection Metallic High-Transmission Coatings (MHC) on all air-to-glass optical surfaces. This combination of glass, lenses, and coatings virtually eliminates chromatic aberrations for clear and bright high-contrast images with true color rendition. This is a versatile optical tube assembly (OTA) that is well suited for wide-field astronomical observation of prominent nebulae, star clusters and galaxies, or can be used as an astrograph for sky photography, a terrestrial spotting scope or telephoto lens. The larger 120mm aperture of this ProED model not only increases image brightness over the smaller 80mm and 100mm versions, it improves resolution and contrast.

A mounting cradle-ring clamps over OTA and allows the user to adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balance, while avoiding interference with other equipment. The scope is offered without a mount or tripod, but a Vixen-style dovetail plate makes it compatible with any alt-az or equatorial mount with a Vixen-style saddle.

Its two-speed Crayford-style focuser helps make fine-focusing fast and precise without backlash. The ProED comes with several accessories to help you get observing faster and easier. First, are two long eye relief eyepieces that produce 30 and 120x magnification, a 90° star diagonal for more comfortable viewing, and a large 8x50 erect-image finderscope to make finding your celestial objects faster and easier. Finally, Sky-Watcher provides a foam-lined aluminum carrying case to safely store and transport the OTA.

Optical Performance
  • 120mm objective lens
  • 900mm focal length
  • Focal ratio: f/7.5
  • Refractor-style optical design
  • Extra-low Dispersion (ED) glass
  • Apochromatic doublet lenses eliminate chromatic aberrations for true color rendition and enhanced contrast
  • Proprietary anti-reflection Metallic High-Transmission Coatings (MHC) multi-coatings on all optics
  • Objective lens cell is light-baffled to reject stray, unfocused light
  • Baffled draw tube for enhanced contrast
  • OTA interior is flat blackened to help prevent unfocused internal light reflections from reaching the focal plane
  • Resolution, Rayleigh: 1.16 arcsec
  • Resolution, Dawes: 0.97 arcsec
  • 2" diameter focuser
  • Dual-speed Crayford-style
  • Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
  • Includes 1.25" adapter for using smaller eyepieces and accessories
Included Accessories
  • Two 1.25" barrel diameter eyepieces:
    • 5mm eyepiece: Yields 180x magnification
    • 20mm eyepiece: Yields 45x magnification
  • Diagonal:
    • 90° angle
    • Dielectric coatings for greater than 99% reflectivity
    • Star diagonal corrects images vertically, but not horizontally
  • 8x50 erect-image finderscope with bracket
  • Foam-lined hard aluminum carrying case
  • User-supplied mount and tripod required
  • Vixen-style dovetail plate included
  • Compatible with any alt-az or equatorial mount with a Vixen-style saddle
  • Cradle-ring assembly for plate allows the scope orientation to be changed based on mount configuration
  • Integrated 1/4"-20 piggy-back camera mount for wide-field astrophotography
  • Quick-release system for fast setup and breakdown
UPC: 812556011245
In the Box
Sky-Watcher ProED 120mm f/7.5 Doublet APO Refractor (OTA only)
  • 5mm Eyepiece
  • 20mm Eyepiece
  • 2" 90&Deg; Diagonal
  • 1.25" Eyepiece Adapter
  • 8x50 Finderscope with Bracket
  • Mounting Plate and Cradle Ring Assembly
  • Foam-Lined Aluminum Carrying Case
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Sky-Watcher Pro 120ED APO specs

    Optical Tube Assembly
    Optical Design Apochromatic Refractor
    Aperture 120 mm / 4.7"
    Focal Length 900 mm
    Focal Ratio f/7.5
    Eyepiece Barrel Diameter 2"
    Diagonal Yes, 90 Star
    Finderscope Yes
    Mounting System Vixen Style
    Weight 11.3 lb / 5.2 kg
    Packaging Info
    Package Weight 38.0 lb
    Box Dimensions (LxWxH) 44.0 x 15.0 x 14.0"

    Sky-Watcher Pro 120ED APO reviews

    ProED 120mm f/7.5 Doublet APO Refractor (OTA only) is rated 4.0 out of 5 by 2.
    Rated 4 out of 5 by from Sky-Watcher refractor telescope. Very few products quite reach perfection, therefore the 4 star rating. Extremely well made and handsome, this doublet ED glass refractor is reaching the size & weight zone which will make transport of this equatorial mounted telescope a bit unwieldy as one unit. Beautifully clear views of the various night objects and ease of set-up are part & parcel of this package. For this price range I didn't expect to find the included carry chest to be of exceptionally robust construction, and it isn't; adequate but not top drawer. I deffer to others when it comes to my main reason for this purchase, astrophotography, our weather has not permitted the exposure time needed.
    Date published: 2014-10-01
    Rated 4 out of 5 by from Recommended The optical quality of the SW 120 pro is really good for a doublet. The telescope is very light and it produces a very nice image. The mechanics of the scope leave a little to be desired. Nothing grossly wrong but one of the focuser knobs was installed too far in and was rubbing the housing. It was a simple fix to get it working correctly. Skywatchers shipping box is kind of flimsy and the first scope arrived damaged. B&H remedied that quickly with a replacement. The 2nd one arrived unscathed.
    Date published: 2017-05-26
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    Sky-Watcher Pro 120ED APO Q&A

    Sky-Watcher Pro 120ED APO accessories

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