Celestron SkyMaster 25x70mm Review

Celestron SkyMaster binoculars have been a popular option for years, particularly for people looking for binoculars meant for long-range terrestrial viewing and astronomy. When shopping for binoculars, you will find many models with each promising to deliver top results. This post will specifically focus on the Celestron SkyMaster 25x70mm.

The SkyMaster 25x70mm is a high precision binocular designed to meet the needs of anyone who wants to view objects that are at a distance. Moreover, it is a highly affordable option that bino experts believe could be a starting point for any aspiring bino enthusiast.

But what exactly makes it a superior option among astrology binoculars? Well, let’s find out.

What could you use it for?

Mainly, the Celestron SkyMaster 25x70mm binocular is meant for long-distance land viewing and celestial observation. It’s best suited for these purposes because it has a high level of magnification. That way, you can view distant objects more clearly. The binocular also allows you to see the objects in a more detailed manner by bringing them closer.

After all, the SkyMaster 25×70 has a 70mm objective lens that helps to improve the magnification power of the binoculars by improving the brightness. This aspect makes it suitable for viewing celestial objects at night or in low light environments.

Apart from its usage in astrology, hunters can also use it to spot game from a long distance. Others also use this binocular to spot marine creatures from a distance.


The Celestron SkyMaster 25×70 is engineered with a 25X magnification strength. Such power makes it ideal for viewing objects at a long distance in the sky, on the sea, and on land. The magnification strength will bring the objects closer, thus allowing you to see them in more detail. (Viagra)

Besides, you can’t see celestial objects through the naked eye, and you will need the magnification of this binocular to bring them into your field of view.

Objective lenses

Celestron has designed this binocular to use 70mm objective lenses. The objective’s diameter works together with the 25X magnification to improve the light-gathering ability of this binocular.

This binocular produces an exit-pupil of 2.8mm in diameter. It enables the Celestron SkyMaster 25×70 to gather enough light during the day to allow you to see clear, bright images. The same goes for when there’s good light.

Since the binocular is capable of gathering light, you can also use it under low light conditions to view the objects you’d like. Overall, the lenses are designed to deliver clear and sharp images when you view objects that are at a distance.

Image quality

The Celestron SkyMaster 25×70 is built to deliver high-quality images. You see, the binocular has a twilight factor of 41.83 that improves night viewing. This twilight factor has suitable levels of brightness and contrast that enable you to view objects under low light conditions.

The binocular also has a brightness factor of 7.84. It is further enhanced by the multiple coating lens treatment, which delivers crisp and clear images in different lighting conditions. You can also use the focusing knob to bring the distant objects closer for more detailed viewing.

The best part is that the Celestron SkyMaster 25×70 has a BAK-4 Porro Prism system that creates true color value so that the images are rendered more accurately.

Optical coatings

The Celestron SkyMaster 25×70 features multi-coated optics, which get rid of unwanted light reflections. The optics on this binocular improve the light transmittance. To achieve this, the manufacturer coats some of the optical surfaces with anti-reflection coatings. That way, the light that gets to your eyes is controlled for better viewing.


To enhance its functionality, the Celestron SkyMaster 25×70 comes with a couple of accessories that might come in handy when one is using the product. First, the binocular comes with a carry case, making it convenient to move with from one place to another. Note, however, that the case does not have thick padding and neither does it have separate pockets.

Additionally, the binocular has a neck strap that is 8mm wide. Although the strap doesn’t have thick padding, it comes in handy for carrying the pair.

It also has soft and flexible objective lens covers that protect the lenses. These covers also have a snug fit to keep the lenses safe. Additionally, the binocular has a lens cloth that provides a simple clean.


  • It has a great feel
  • The product has a smooth focus knob that promotes more detailed viewing
  • It delivers crisp images of celestial objects
  • That multi-coated optics that improve light transmittance
  • Includes a convenient carry case
  • Compatible with a tripod adapter
  • Easy to mount on a tripod stand


  • It is a bit heavy
  • Not easy to focus with
  • Light tripods do not support the pair well. You will experience some shake
  • The quality of the neck strap is wanting


This pair of binoculars is evidently a good fit for anyone who wants to explore skies, seas, or just want to make his or her hunting easier.