Celestron SkyMaster 25×100 Binoculars – Review

Celestron SkyMaster 25x100 Binoculars

When you’re shopping for astronomy binoculars, size does matter. Larger models have the ability to let in more light to give you the clearest view of the night sky possible. Despite their vision enhancing benefits, though, larger binoculars are more cumbersome due to their bulkier design and increased weight. Compared to other large sized astronomy binoculars, the Celestron SkyMaster 25×100 Binoculars stand out because they provide the best viewing experience from a design that is easier to manage.

The Celestron SkyMaster 25×100 Binoculars weigh 156 ounces. This makes them an impractical choice for hand-carrying or wearing around your neck; however, they are still much less weighty than competitors. Because of their size, the binoculars are best used along with a tripod that is built to hold-heavy duty, large-sized binoculars. For your convenience, the binoculars are already equipped with a tripod adapter, and there is an easy-to-twist knob that adjusts its position to make mounting easy.

With 4-millimeter exit pupils and a 15-millimeter eye relief, the Celestron SkyMaster 25×100 Binoculars provide a full, comfortable view for most adults, including eyeglass wearers. The eyepieces feature 450-degree rotation, allowing you to get a focus that is incredibly sharp. The 100-millimeter objective lenses make it possible to see very distant, faint objects in the night sky, and you’ll feel fully immersed in the night sky when you’re using these binoculars.

Celestron SkyMaster 25x100 Binoculars - ReviewThe Celestron SkyMaster 25×100 Binoculars are water-resistant. They lack the rubberized housing found on some competitors, although without this extra insulation they are better able to adjust to outside temperatures, which helps to extend the life of the binoculars. In lieu of the rubber coating, the binoculars feature a rubber ring around the housing that should be enough to keep out humidity and fog. The surface of the binoculars is textured to provide the slip-resistant traction that is usually made possible by a rubberized housing. As a result, you shouldn’t experience slippage when you’re setting up your tripod or carrying the binoculars in your hand.

There are a few drawbacks to the Celestron SkyMaster 25×100 Binoculars that should be pointed out. For one thing, the instruction manual is not very thorough. Beginners may find the documentation to be lacking to the point that it’s hard to use the binoculars to the fullest, so the model is recommended for those who are upgrading from a smaller pair of astronomy binoculars.

There is also no center focus knob in the design. This isn’t an issue for astronomy use, as most users will be better served by independently adjusting the focus of the eyepieces, but for other uses this may prove to be a hassle. On the other hand, the size of these binoculars makes them less than ideal for many uses like hunting and boating. In other words, the lack of the wheel is unlikely to really be much of a problem for most users.


Magnification: 25x porro prism binocular
Objective Diameter: 100 mm
Weight: 156 ounces
Field of View: 3 degrees
Exit Pupil: 4mm
Eye Relief: 15 mm
Optical Coating: Multi-Coated
Weather Proof: Waterproof