Binoculars Celestron SkyMaster 15×70 — 15× magnification, 70 mm objective, BaK-4 prisms, waterproof

Celestron SkyMaster 15×70 binoculars provide 15× magnification with large 70 mm objective lenses and BaK-4 prisms to deliver bright, high-contrast views for long-range observation and basic astronomical use. The binoculars feature a waterproof body, 4.7 mm exit pupil and 1.8 cm eye relief; a carrying case is included.

Advantages

The combination of 15× magnification and 70 mm objectives increases light-gathering ability for clearer views at long distances and under low-light conditions. BaK-4 prisms improve contrast and edge-to-edge sharpness. Compact-for-their-class dimensions and included carrying case support transport and outdoor use, while waterproof construction protects optics in damp environments.

Suitable for

• Astronomical observation of the Moon and brighter deep-sky objects
• Long-range terrestrial viewing and landscape observation
• Outdoor activities such as birdwatching and coastal watching where high magnification is useful

Key specifications

• Magnification: 15×
• Objective diameter: 70 mm
• Prism type: BaK-4
• Exit pupil diameter: 4.7 mm
• Apparent field of view: 4.4°
• Eye relief: 1.8 cm
• Closest focusing distance: 13 m
• Waterproof: Yes
• Dimensions (W×D×H): 280 × 340 × 135 mm
• Weight: 2.5 kg
• Colour: Grey

How to use

Set each eyepiece to match your interpupillary distance, then focus on a distant object using the central focusing mechanism until the image is sharp. For celestial targets, allow your eyes a moment to adapt to darkness and use a stable support or tripod for steady views at 15× magnification. Keep the eyecups at a comfortable position to maintain the specified 1.8 cm eye relief.

Usage recommendations

Do not look directly at the sun through these binoculars. Use a tripod or other steady support for prolonged observation at high magnification, and store the binoculars in the included carrying case when not in use to protect them from moisture and mechanical damage.