Celestron 71008 SkyMaster 25x70mm Porro Prism Binoculars with Multi-Coated Lens, BaK-4 Prism Glass and Carry Case, Black

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It means that as well as being pretty good binoculars for astronomy, they are perfect for a number of long range uses during the day. As a workaround to help see some of the fuzzies still from home I was looking at acquiring a larger pair of binos than my current 7x50 Strathspey, which although give good results, don’t have the light grasp or power to pull out much unless at a nice dark sky sight, which was going to be a rarity to do due to work and location etc. The Zhumell 12x70s are more forgiving of collimation issues and require a less stable mount compared to higher-power binoculars of this aperture, with handheld use being at least in the realm of possibility. I can imagine that the smaller exit pupil of the 25x70 would give more pleasant dark sky backgrounds than the 15x70s in your more light polluted area.

To adjust the focus from it's minimum near focus to the other extreme of infinity takes just one full turn of the wheel (360°). is authorised and regulated by the Financial Conduct Authority, register number 689922 and act as a credit broker and not a lender.The weight of these binos are not that much different to the weight of the Strathspeys, which with been Marine binos are solid, so didn’t have much problem holding the 25x70’s up by hand. However having said that they do just enough and to be honest I would rather see them making cuts in this department than making more sacrifices to the quality of the actual binocular.

There are between 10 and 18 glass surfaces within most binoculars, all of which have the potential to reflect light in an undesirable way. These binoculars are capable of unveiling a handful of galaxies, including M31 and M33, though the presence of urban light pollution will obstruct finer details or entirely obscure these objects. These observations were on a night with a moon that was almost full and a fair amount of light pollution, so I am sure it would be possible to see more if the conditions were better and with more experience of where to look! UPGRADED BINOCULARS – Our premium binoculars feature a high magnification 20x zoom eyepiece and a 168 yard field of view at 1000 yards, allowing you to see and focus on the huge detail of your target from 1000 yards away.Looking at smaller deep-sky objects, like planets, stars and clusters a tripod is pretty much essential to keep the view steady enough. Good to see you back observing Gus, and great that you've got a setup that you can make work for you. The prisms used in all SkyMaster binoculars, as well as most high-quality binoculars, are made from BaK-4 crown glass. Having a good balance when holding your bino is always desirable, but on a high powered and relatively heavy one like this, it is even more important. Perhaps Celestron assume that these will be mounted on a tripod most of the time, but I think the fact that they make such good long distance terrestrial bins and you can hand hold them, means that I think they are missing a trick here.

On most binoculars this grip location is also at or fairly near to the balancing point on the device, but because the barrels are so long and the objectives so large on these SkyMaster's, I found that this is not the case on these and if you simply hold them at this point with your forefingers on the top and your thumbs underneath, they want to tip forward. At the forefront of a new era in amateur astronomy, the launch of Celestron Origin stands as a beacon, seamlessly intertwining stargazing and astrophotography into a singular, user-friendly experience. Specific areas that I can think of include good plane spotting binoculars, where using a tripod makes it very difficult to follow the moving aircraft.Porro prisms on the other hand do not need phase correction coatings and because you get total internal reflection of the light waves, you do not need to add highly reflective coatings to it's surfaces and so they perform as well as much more expensive roof prisms.

The smooth and large center focus knob makes it simple to operate and easy to focus (Adaptable to a tripod). There can be collimation issues in some samples too, although that can be improved using the small adjustment screws underneath the rubber armour. Once the Zygo test report has been completed, the optical alignment is thoroughly tested and tuned to ensure they are spot on before they leave us.

An unbalanced bin is harder to keep steady and will also lead to fatigue over longer periods of use. I have a monopod too which I use for quick looks withthe binis, but the tripod is much better for longer more stable views of objects. Large eyepiece ensures the stability of human imagination, preventing dizziness and eye fatigue after a long time watching. This is simply not true, the relatively low weight and good balance of these (once you hold them right) means that I was easily able to look through them over fairly long periods using nothing more than my hands during the day. So it was no surprise that the image I could see through my top end and my mid level 8x42mm controls was brighter than that through these.