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Celestron - 71370 - Granite 8x42 Roof Prism Binoculars

Code: R42QH

  • Fully Multi-Coated for enhanced light transmission
  • BaK-4 Prisms with High Reflectivity and Vivid Colors
  • Binocular Harness Strap - comfortable and keeps the binoculars handy

Product details

Celestron - 71370 - Granite 8x42 Roof Prism Binoculars

• Fully Multi-Coated for enhanced light transmission
• BaK-4 Prisms with High Reflectivity and Vivid Colors
• Binocular Harness Strap - comfortable and keeps the binoculars handy
• Metal construction in the Focus Knob, Diopter Ring, and Twist-Up Eyecups for long life and precision movement
• Waterproof and Fogproof - nitrogen purged to prevent internal fogging in all weather conditions
• Eco-Friendly - lead and arsenic free


Celestron Granite ED Series Roof Prism Binoculars represent the core values of rock solid binocular design, ultra-high performance glass and reliable construction at an affordable price. The ED lenses ensure that each wavelength of light is kept in balance with all the others to provide an image which is true-to-life. They are also useful in lowlight situations helping you to pick out details in subjects in dense brush even at dawn and dusk. 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 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. Coupled with fully broadband multi-coatings the optical design delivers crisp, high contrast images with accurate color reproduction for unrivaled image quality superior to standard optical glass.


The Phase Coated Prisms correct out-of-phase shifts of light rays to ensure maximum contrast while providing superb natural color fidelity and vivid color saturation. High grade BaK-4 prism glass renders sharp images and the reflectivity coatings increases the throughput transmission to provide bright images that are rich in detail.


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. They are a mid-sized binocular, perfect for travel because of their weight and small form factor yet are packed with features that match up well optically, mechanically and ergonomically with binoculars costing two to five times as much.

Metal Twist Up Eyecups: More durable and a longer life than plastic eyecups. Less susceptible to breaking. Twist-up eyecup for correct positioning of the users eyes for comfortable viewing with or without eyeglasses.

Waterproof construction provides peace of mind when unexpected weather rolls in. The housing is also filled with dry nitrogen gas to prevent the internal lenses from fogging when moving between extreme temperatures or when using the binocular in damp conditions.

Perfect For:

- Bird Watching
- Hunting
- Wildlife and Nature Viewing
- Travel and Outdoors
- Sporting Events
- Astronomical Viewing
- Low Light; Extended Use; Changing Weather Conditions

Specification table
Objective Lens Diameter (mm) 42 mm
Magnification (x) 8x
Angular Field of View 8.1°
Linear Field of View 426 feet @ 1,000 yds
Exit Pupil (mm) 5.25 mm
Eye Relief (mm) 17 mm
Close Focus 2 m
IPD Max 73 mm
IPD Min 56 mm
Optical Coatings Fully Multi-Coated
Weight (oz) 23.9 oz (678 g)
Prism Glass (Type) BaK-4
Twilight Factor 18.33
Relative Brightness 27.56
Waterproof Yes
Nitrogen Filled (Fogproof) Yes
Tripod Adaptable Yes
Included Accessories Neck strap, Harness strap, Objective lens caps, Rain Guard, Carrying Case, Lens Cloth, Instruction Manua

Bulk Prices

Item code Item name Quantity Price
R42QH Celestron - 71370 - Granite 8x42 Roof Prism Binoculars (1+) £359.99

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