Celestron Granite 42mm Binoculars

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About this product

Model:  cel_granite_8x42_71370
Part Number:  71370

Celestron Granite ED Series Roof Prism Binoculars are the pinnacle of optical and mechanical design. They stand up well against the much more expensive European and higher end Japanese manufactured binoculars at a fraction of their cost - a real value!

Granite ED Binoculars feature ED (Extra-Low Dispersion) glass, delivering edge-to-edge sharpness with excellent color correction and razor sharp images while virtually eliminating chromatic aberration.

State-of-the-art modern open frame style provides an excellent grip and is comfortable to handle (even single handed) with the reduced weight.

The body is made of magnesium alloy which is lighter than aluminum and more rugged and tough for handling in any environment.

Perfect for:

  • Hunting
  • Bird Watching
  • Sporting Events
  • Wildlife and Nature Viewing
  • Travel and Outdoors
  • Astronomical Viewing

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  • Fully Multi-Coatings - provide maximum light transmission with the highest levels of contrast. Provide superb natural colour fidelity and vivid colour saturation
  • BaK-4 Prisms with Dielectric High Reflectivity Coatings & Phase Coated – the high grade prisms allow for sharp images and with the high reflectivity coatings help increase the throughput transmission to provide the brightest possible images.  The phase coatings correct out of phase shifts of light rays to ensure maximum contrast.
  • Phase Coated Prisms - correct out-of-phase shifts of light rays to ensure maximum contrast
  • Waterproof and Fogproof - nitrogen purged
  • Eco-Friendly - lead and arsenic free
  • Focus Knob, Diopter Ring and Twist-Up Eyecups - made of metal for long life and precision movement
  • Binocular Harness Strap - takes the strain off of your neck and distributes the weight load of the binoculars to your shoulders and torso. The harness is very comforable and keeps the binoculars handy when carrying them during extended use
  • Standard Deluxe Binocular Strap
  • Carrying Case
  • Limited Lifetime Warranty

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What's in the box

  • Granite Binoculars
  • Objective Lens Caps
  • Rainguard
  • Carrying Case
  • Neck Strap
  • Harness Strap
  • Lens Cloth
  • Instruction Manual


Objective Lens Diameter (mm)42 mm42 mm
Magnification (x)8x10x
Angular Field of View8.1°6.5°
Linear Field of View426 feet @ 1,000 yds340 feet @ 1,000 yds
Exit Pupil (mm)5.25 mm4.2 mm
Eye Relief (mm)17 mm15 mm
Close Focus2 m8.2 ft
IPD Max73 mm73 mm
IPD Min56 mm56 mm
Optical CoatingsFully Multi-CoatedFully Multi-Coated
Weight (oz)23.9 oz (678 g)23.4 oz (633 g)
Prism Glass (Type)BaK-4BaK-4
Twilight Factor18.3320.49
Relative Brightness27.5617.64
Nitrogen Filled (Fogproof)YesYes
Tripod AdaptableYesYes
Included AccessoriesNeck strap, harness strap, objective lens caps, rainguard, carrying case, lens cloth, instruction manualNeck strap, harness strap, objective lens caps, rainguard, carrying case, lens cloth, instruction manual

Downloads / Manuals

Celestron Granite Instruction Manual (PDF)

Customer reviews

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Granite 8x42
Thursday, 10 May 2018  | 

Had these for about two years now and very pleased with them. My partner wears glasses and can use them fine, the eyecups give plenty of room when down and are comfortable to use when up if you don’t wear glasses. The frame is very easy to hold even when wearing gloves and we find are light enough to hand hold. The flip down eye caps are floppy so we always remove them before any use so they aren't in the way. The views are very bright and crisp day or night and the wide field of view is absorbing particularly on the night sky.


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Q1. How much do these binoculars weigh?

The Celestron Granite 42mm binoculars weigh approximately 633g / 23.4oz.

Q2. How do I use the harness strap?

Granite ED and TrailSeeker binoculars include a binocular harness strap similar to a photographerís Cuban hitch. This harness strap serves a dual purpose. Compared to the conventional neck strap (also included with your binoculars), the harness distributes the weight load of the binoculars to your shoulders and torso, taking the strain off your neck. It is very comfortable and also safely keeps the binoculars handy when carrying them during extended use.

To use the harness, first find the small straps (about 6 inlong) that came with your binoculars. Remove the regular strap to get it out of the way. Thread the shorter straps (one on either side) onto the binoculars.

Once you've threaded the short straps, you can don the harness. The mesh side will go against your back, while the perforated fabric side will face outwards. Pass your ams and shoulders through the two loops so the harness panel rests on your back. Next, clip the binocular's two short straps to the swivel hooks on the harness. You are now set to observe with your binoculars.

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