Celestron SkyMaster Pro ED 7x50 Binoculars
Celestron SkyMaster Pro ED 7x50 BinocularsCelestron SkyMaster Pro ED 7x50 BinocularsCelestron SkyMaster Pro ED 7x50 Binoculars
Celestron SkyMaster Pro ED 7x50 BinocularsCelestron SkyMaster Pro ED 7x50 BinocularsCelestron SkyMaster Pro ED 7x50 Binoculars

Celestron SkyMaster Pro ED 7x50 Binoculars

£189.00✓ 2 year warranty


1x in stock shipped 1-2 working days

Steve Ringwood writing for Astronomy Now Magazine.

"A litmus test
In general terrestrial use, the fiercest optical test I know is the view through a tree canopy against a backdrop of strong sunlight. In this territory, even very expensive binoculars fear to tread. However, these Celestrons fared very well indeed. I could hardly persuade myself that the branches were fringed with any false colour at all - and even that suspicion only betrayed itself with my eyes held off the centre of the optical axis in untypical fashion. I was very impressed.

Read the full review (pdf)

About this product

Model:  cel_skymstr_pro_ed_7x50
Part Number:  72033-CGL

Celestron SkyMaster Pro ED binoculars are ideal for astronomers or anyone who observes at great distances. 

The SkyMaster Pro ED uses superior optics, coatings, internal parts, and housing materials. With large objective lenses, BaK-4 prisms, ED glass, and fully multi-coated optics utilising Celestron’s proprietary XLT coating technology, the view through a SkyMaster Pro ED sets the standard for astronomy binoculars.

ED Objective Lenses

Extra-low Dispersion (ED) glass virtually eliminates chromatic aberration, also known as colour fringing, a visual phenomenon common in magnified optical systems. SkyMaster Pro ED delivers edge-to-edge sharpness with excellent colour correction and razor-sharp images.

Not all ED glass is created equal. Celestron’s high-quality ED glass delivers brighter, sharper images than non-ED binoculars. The difference is especially apparent in low-light conditions.

Coatings and Prisms

All of Celestron SkyMaster Pro ED’s lens surfaces are fully multi-coated and feature Celestron’s proprietary XLT optical coating technology.  These coatings, similar to those on our observatory-grade telescopes, decrease reflectivity for higher optical throughput across a broad visible light spectrum range. What’s more, the prisms inside the binoculars are made of high-quality BaK-4 glass, further boosting light transmission. Working together, the fully multi-coated lenses and BaK-4 prisms deliver more light from your target to your eye for brighter, more detailed views.

Objective Lenses

The 50mm objective lenses offer plenty of light-gathering ability for superior low-light performance. The objective diameter-to-magnification ratio is ideal for scanning the skies, observing the Moon and planets, and exploring all the best deep-sky objects. Celestron SkyMaster Pro ED also makes an excellent choice for long-distance land-based viewing—especially at dawn or dusk.

The Body

Custom-designed rubber armour and a durable chassis protect your SkyMaster Pro ED binoculars from damage without weighing you down. Viewing through SkyMaster Pro ED binoculars is comfortable for eyeglass and non-eyeglass wearers, thanks to the retractable eyecups and nearly 21mm eye relief. Eyeglass wearers can see the entire field of view while looking through the eyepiece with their glasses by twisting the eyecups down. For those who do not wear eyeglasses, the eyecups position the user’s eye behind the eyepieces at the correct distance for optimal viewing.

Ways to Observe

The Celestron SkyMaster Pro ED binocular is tripod-adaptable. You can use a binocular tripod adapter (not included) to mount it on any standard photographic tripod or monopod for extended viewing or digiscoping (photography through the eyepiece).

SkyMaster Pro ED’s eyepieces are threaded to accept standard 1.25” astronomical eyepiece filters. Adding the right filter can deliver game-changing views for terrestrial and celestial observing. For terrestrial observation, filters can reduce the brightness of sand, snow, and water. For nighttime viewing, filters can cut glare, minimise eye strain, increase contrast, and even combat the effects of light pollution. Remember, the binoculars have two eyepieces, so you need a set of two filters.

Share your greatest discoveries with friends and family! Pair your SkyMaster Pro ED binocular with a smartphone adapter to capture images and video through the eyepiece.


  • ED objective lenses for images virtually free of chromatic aberration, with lifelike colour, increased resolution, and enhanced contrast
  • Large 50mm objectives provide excellent light-gathering ability—perfect for astronomy
  • Threaded eyepieces accept standard 1.25” astronomy eyepiece filters to enhance detail or reduce the effects of light pollution
  • BaK-4 prisms and fully multi-coated optics with XLT coatings boost light transmission through the optical path for brighter, more detailed images
  • The widely spaced objective lenses of the Porro prism optical design provide an enhanced 3-D view
  • Eyeglass-friendly with generous eye relief and padded twist-up eyecups
  • Durable rubber-armored housing with improved ergonomics for comfortable use in the field
  • Tripod-adaptable for extended viewing sessions


What's in the box

  • Skymaster Pro ED Binoculars
  • Objective Lens Caps
  • Eyepiece Covers
  • Rainguard
  • Carry Case
  • Neck Strap
  • Lens Cloth
  • Instruction Manual


Magnification 7x
Objective Lens Diameter 50 mm
Lens Coatings Fully Multi-Coated - XLT Coatings
Angular Field of View 7.8°
Linear Field of View 409 ft (136 m)
Close Focus 26.2 ft (8 m)
Eye Relief 20.8mm (.82")
Exit Pupil 6.4mm (.25")
Prism Type BaK-4
Waterproof Yes (IPX7)
Fogproof Yes. Nitrogen filled
Relative Brightness 51.02
Twilight Factor 18.7
Limiting Stellar Magnitude Ideal: 10.99 | Moderate: 9.99 | Poor: 8.99
Interpupillary Distance (mm) 56-72 mm (2.2-2.83")
Diopter Adjustment Range ±3
Size (LxWxH) 180mm x 198mm x 64mm (7.1" x 7.8" x 2.5")
Weight 44.3 oz (1,255g)

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