User manual
Athlon Optics 8.5x42 Cronus Binocular

User Manual for Athlon Optics 8.5x42 Cronus Binocular

• Product category: Binoculars Athlon Optics
• Brand: Athlon Optics
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Athlon Optics Binoculars

Product description

Optical Performance
• • Atypical 8.5x power provides slightly more magnification than a standard 8x without narrowing the field of view and exit pupil that happens with higher power optics
  • Large 42mm objective lenses improve light-gathering ability for enhanced low-light performance such as at dawn and dusk or when peering into dense brush
  • Roof prism light path ensures the optical tubes remain slim for easier handling without affecting performance
  • Field-flattener lens system reduces spherical aberrations for crisp edge-to-edge distortion-free views
  • Extra-low dispersion (ED) glass lens elements reduce chromatic and spherical aberrations for increased contrast and improved color rendition and sharpness without distortion across the entire field of view
  • BAK4 prism glass delivers a round exit pupil and a crisp and clear image with limited edge distortion
  • Phase-correcting prism coatings eliminate internal interference to improve color and contrast
  • Dielectric Enhanced Spectral Prism (ESP) coatings boost surface reflectivity to greater than 99% for maximum light transmission through the prism with minimal loss and diffraction
  • Broadband anti-reflection fully multi-coated optics maximize light transmission and improve contrast and color fidelity across the entire visible spectrum
  • Proprietary XPL exterior lens coatings resist scratches and abrasions while allowing oil, dirt, and sap to be cleaned off without leaving smudges or residue
  • Wide 65° apparent angle of view presents an immersive and panoramic observational experience
  • Spacious 399-foot field of view at 1000 yards

Use and Handling
• • Closed-bridge configuration provides a strong and stable platform for the internal focusing mechanism
  • Large slip-resistant center focusing wheel is easy to manipulate in cold and wet weather, even while wearing gloves
  • Locking right-eye dioptric correction allows user to set the compensation for optical prescription to produce sharper views and lock it in place to avoid accidental adjustment
  • Broad 56-73mm interpupillary distance adjustment range enables easy use by a wide variety of users
  • Twist-up click-stop eyecups for easy use with or without eyewear
  • Tripod mountable with an optional adapter for hands-free use to eliminate vibrations and arm fatigue
  • Extra long 22mm eye relief allows for easier viewing with reduced eye strain during extended use
  • 4.9mm exit pupil will cover most pupils as they open and fully dilate in low light to keep the whole scene in view without vignetting

Construction Details
• • Lightweight and durable magnesium alloy chassis material
  • Protective rubber armor with textured palm pads provides a solid and secure slip-resistant grip
  • Argon-filled and O-ring sealed to be waterproof and resistant to internal fogging when moving through extreme changes in temperature and environmental conditions
  • Tethered objective lens caps and one-piece ocular rainguard protect the lens surface without the fear of losing them when not in use

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Technical parameters

Athlon Optics 111002 Specs

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