Celestron SkyMaster 25X100 Astro Binoculars
Model specifications and list notes
- Field of view3 degrees
Celestron SkyMaster 25X100 Astro Binoculars Review
The SkyMaster 25x100 combines individual eyepiece focus and an integrated tripod adapter rod for supported astronomical or long-range terrestrial viewing.
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The Celestron SkyMaster 25x100, item 71017, is a large binocular with fixed 25x magnification and 100 mm objectives. This article compares its published specifications; it does not report a hands-on or comparative optical test. Celestron’s exact-model specification lists individual eyepiece focus, an integrated tripod adapter rod, water resistance and no nitrogen filling.
Buying Guide for Astronomy Binoculars
At 140 oz (8.75 lb), this binocular requires substantial support rather than pocket-style portability. Consider the tripod, mounting arrangement, viewing posture and the manufacturer’s intended astronomical or long-range terrestrial use.
Celestron – SkyMaster 25X100 Astro Binoculars Overview
Celestron SkyMaster 25X100 Astro Binoculars
The manufacturer’s current specification is the source for the listed model fields. These are not this site’s test results. Check the selected seller’s exact version and package contents.
Published SkyMaster25x100 features for astronomy
Weight
Celestron publishes a weight of 140 oz (3969g), equivalent to 8.75 lb. This is a substantial instrument; plan a suitable supporting tripod and transport arrangement.
Lens System
Celestron lists 100 mm objectives, a 4 mm exit pupil and 15 mm eye relief. Focus is adjusted individually at each eyepiece. Manufacturer specifications do not establish measured image quality for this article.
Build Quality
Celestron identifies environmental protection as water resistant and nitrogen filling as No. Water resistance does not establish waterproofing, submersion protection or nitrogen-based fog protection. Its protective rubber covering and integrated tripod adapter rod are listed features.
Specifications and Features of the Binocular
Magnification – 25 x
The published magnification is fixed 25x, not variable zoom.
Objective Lens Diameter – 100mm
The published objective diameter is 100 mm. This specification alone does not establish a comparative image-quality or low-light test result.
Weight – 140 oz (8.75 lb)
The maker lists 140 oz (3969g), or 8.75 lb.
Field of View – 3 degrees
The published angular field of view is 3 degrees.
Field width – 156 feet at 1000 yards
The manufacturer’s linear field of view is 156 ft at 1,000 yds (52 m at 1,000 m).
Exit Pupil Diameter- 4mm
The published exit pupil is 4 mm.
Pros
- Manufacturer lists individual eyepiece focus
- Integrated tripod adapter rod
Cons
- 140 oz weight requires substantial support
- Water resistant, not waterproof; not nitrogen filled
Conclusion
The SkyMaster 25x100 combines individual eyepiece focus and an integrated tripod adapter rod for supported astronomical or long-range terrestrial viewing. Celestron’s item 71017 specifications list water resistance, no nitrogen filling and 140 oz weight. Decide whether those features and the required support suit your use; check the selected listing’s current price and contents. No current-price bargain, waterproof capability or measured image-quality verdict is asserted here.
Appears in
The lists this binocular appears in.
- Best binoculars below 500 bucks
9.8/10 Our Score
- The Best Binoculars [2026]
Our Pick, 9.4/10 Our Score
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