Binoculars Celestron SkyMaster 25x70 large aperture waterproof

Celestron SkyMaster 25x70 large aperture waterproof binoculars provide 25x magnification and 70 mm objective lenses engineered for long-distance observation and nighttime sky viewing. The binoculars combine a large light-gathering aperture with fully multi-coated optics to increase light transmission, producing brighter images in low-light conditions. The housing is built to resist moisture and light weather exposure, and the instrument is mechanically designed to be mounted on a tripod to achieve stable viewing at high magnification.

Advantages

The optical system uses fully multi-coated glass surfaces to maximize contrast and reduce reflections, supporting clearer views of celestial objects and distant landscapes. The large 70 mm objective lenses improve performance in dawn, dusk, and nighttime conditions by collecting more light than smaller-aperture models. The waterproof exterior helps protect internal optics from moisture and light rain, while the durable construction supports use in field and coastal environments. Tripod compatibility allows for steady, shake-free observation at 25x magnification, making fine detail easier to resolve.

Suitable for

• Astronomy and stargazing
• Long-distance terrestrial observation
• Wildlife watching in open or low-light conditions
• Coastal and marine viewing

Key specifications

• Magnification: 25× for high-power viewing
• Objective lens diameter: 70 mm for increased light gathering
• Optical coatings: fully multi-coated surfaces to improve transmission and contrast
• Housing: waterproof construction for protection against moisture
• Mounting: tripod-adaptable for stable observation

How to use

For handheld use, support the binoculars with both hands and stabilize your posture to minimize vibration; however, at 25× magnification it is recommended to use a tripod adapter and mount the binoculars on a tripod for prolonged observation or high-detail viewing. Adjust the central focus wheel to bring targets into sharp focus and use the diopter adjustment to fine-tune for differences between your eyes. When observing the night sky, allow your eyes to adapt to darkness before seeking faint objects and use slow, deliberate movements to locate targets.

Usage recommendations

Use a sturdy tripod or monopod for the most stable images at high magnification. Store the binoculars dry and clean lenses with a soft microfiber cloth and appropriate lens cleaner to preserve optical coatings. Avoid prolonged immersion in water despite waterproof housing and rinse with fresh water after exposure to salt spray.