Celestron 25 X 70mm SkyMaster


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The Celestron 25 x 70mm SkyMaster gives you seriously high power at a surprisingly low price . . .
Our Product #: C2570
Celestron Product #: 71008

Product Description

Surprisingly economical, the Celestron 25 x 70mm SkyMaster can reveal the splendors of the heavens at night and the secret life of very distant wildlife during the day. Because of its high magnification and substantial 52 ounce (1474g) weight, you will find it difficult to keep the 25x70 Celestron steady enough for comfortable and unblurred extended observing while handholding it. Accordingly, a tripod adapter is supplied that lets you mount this big Celestron on any photographic tripod you might have available.

For astronomers, the 25 x 70mm Celestron SkyMaster is almost the equivalent of a low power 100mm rich field telescope. With a wide 2.7° field of view, it excels at sweeping the star clouds of Sagittarius, searching out the Great Galaxy in Andromeda, taking in open clusters like the Beehive and the Wild Duck, and more.

For nature study, the 25 x 70mm Celestron SkyMaster will let you observe deer feeding in distant meadows early in the morning or resting in tall grass midday, courtship behavior in distant off-shore rookeries, and more. With a close focus of 75', this is clearly not a binocular for warblers or butterflies (unless you are watching them from across a very deep backyard).

This center focus Z-body porro prism uses quality BaK-4 prisms and multicoatings for good light transmission and no prism shadowing. Specified eye relief is a little short for totally unvignetted eyeglass use, at 13mm, although most eyeglass wearers will not find this an inconvenience. A diopter ring on the right eyepiece lets you match the binocular performance to that of your eyes.

It comes with a lightweight soft vinyl storage case, soft rolldown rubber eyecups, protective caps for the optics, and a neck strap. Light rubber armor with textured rubber gripping surfaces provides a sure hold when dewing becomes a problem. The 25 x 70mm is water resistant, but not waterproof. Setting it down in dew-soaked grass would not be recommended.

A supplied separate tripod adapter lets you mount it on any convenient camera tripod for no-hands observing. The tripod adapter mounts on any standard 1/4"-20 thread 35mm or video tripod and can be used with many other binoculars, as well as the SkyMaster.

There is some barrel distortion (straight lines at the edge of the field are curved), and some visible astigmatism and chromatic aberration at the edges of the field. However, these flaws are not obtrusive, particularly in view of the large aperture and exceptionally low price.

As a first serious astronomical observing tool, as a long distance nature study instrument, or as a highly useful companion to take into the field with your telescope at night, the Celestron 25 x 70mm SkyMaster is priced to be easily affordable for any birder or astronomer.

Tech Details

Weight 52 oz.
Warranty Limited Lifetime


Review by:
These binoculars are great for the price I payed. If you are using them at night you'll want to be sitting down or have a tripod or something similar to use them with. Sitting down I was able to view the Triangulum galaxy and the Andromeda galaxy with ease. You can also observe the plants relatively easy, with the moons of Jupiter clearly visible. (Posted on 10/4/2019)
Review by:
Great binocs for the price but they are a bit heavy. Works well on tripod or with a parallelogram type bino mount. (Posted on 7/31/2019)
Review by:
They are heavy. Not counting that as either good or bad as it depends on what you are using them for, but just know they have mass. I've used mine for years for both terrestrial and astronomical viewing and still enjoy them. (Posted on 1/13/2019)
Review by:
Great when used with a stable tripod. To heavy and high powered for handheld use. Mine came out of collimation easily fixed. (Posted on 11/18/2018)
Review by:
Though I have an 8" and 11" scope, these binoculars are fun and enjoyable. i bought a Orion Paragon-Plus Binocular mount & tripod that adjusts to my grandkids and back to adults in seconds. It's a perfect addition to group stargazing through scopes as well as a quick viewing when I don't want to set-up my scopes. (Posted on 10/6/2018)
Review by:
For the price, this is a great pair of binoculars. The field of view is a little tighter than most being these magnify to 25x, but there's still a lot to see through them. If you're used to telescope viewing, you might find the optics on these a little disappointing - some particularly bright objects seem to show halos and color distortion - but overall the view is good, nothing to complain too much about.

One caveat, these things are HEAVY. You're going to want a tripod, or at least a steady mount, to use these for any length of time. Mine came with a tripod adapter so I was good to go. (Posted on 8/4/2017)
Review by:
I bought this binocular for astronomical observing, but also find it useful for terrestrial purposes. There is some achromatic aberration present, but nothing too bothersome. As noted in other reviews, the weight presents problems with a steady view when handheld. One trick I learned is to hold the binocular farther forward on the optical tubes than you might normally do. This helps balance the binocular for a steadier view. Ideally, you should use some mounting device such as a tripod. The large exit pupil and eye relief mean you do not have to have the cups in your eye sockets to have a good view. All in all, it is hard to beat the quality and view for this price. (Posted on 8/4/2017)
Review by:
I purchased this product a few years ago . I like it very much, but find it hard to hold , because of the weight. We found leaning on the car and planting both elbows on the car top , act as a tri pod, to steady your view. looking at the moon is wonderful. its like you could touch it. Its crisp and clear. Wow. Thank you 50 times

Richard (Posted on 8/4/2017)
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