I'm looking for some that would be good for plane spotting at low & high altitudes. Would these work?

That is one of the primary reason I bought the 25x70's. I also have the 15x70's but for plane observation the 25's get you closer. At 35,000 feet (as a reviewer said before) you can see the printing on the plane on a clear crisp day. At night, and this is amazing to me, you can see the windows of the plane with the light coming out of them. If the planes are lower, the views are even more spectacular. NOW, you WILL need a TRIPOD with a VIDEO HEAD to help you keep the binoculars steady and to track the plane. I also recommend the Planefinder App so you know what is flying over you and what is approaching your area. I spend hours looking at the flight traffic over my house and these 25x70's are perfect and totally add to my enjoyment of looking at high altitude aircraft.

Tripods for 25x70. Do I use the small Barska adapter or the screw on the bottom of binocs? What type tripod? If known, what's the exact name.

TRIPOD: Recommended tripod must take at least 4 lbs and upwards, I'd recommend this tripod; http://www.amazon.com/66-inch-Heavy-Duty-Tripod-Bag/dp/B00EVC9PQI/ADAPTER: The adapter included with the binoculars will work but to me its a bit too flimsy. I'll recommend http://www.amazon.com/Barska-AF10546-BARSKA-Binocular-Adaptor/dp/B000BYH8EQ/SCREW HOLES: The screw holes on the binoculars is located between the two outer objective lens and is covered with a cap which has the Celestron logo. Just unscrew the cap and you'll see the 1/4 inch hole where you'll attach the tripod adapter. The tripod adapter will now be attached to the tripod plate with 1/4 inch 20 screw, then you attach the tripod plate to the tripod and you can now enjoy your viewing.

I know NOTHING about binoculars. I am looking for a decent pair for my husband who would be using them for police surveillance. Are these suitable?

No. Too powerful. Any magnification over 10x reduces the field of view seriously. Your husband will have a hard time finding the objects he wants to view, and, when they move suddenly, as in any kind of action, it will be hard to keep the binoculars on target. A pair of inexpensive (< $100) of 10x50 will serve him well.

Are these to heavy to use on a boat? To check out other boats or view things that may help with navigation or hazards. Spotting moorings ECt

I have to jump-in on this question. These would be totally useless on any boat smaller than an aircraft carrier. The high magnification means that they must be held rock steady to be of any use and that's impossible on a boat. 8x magnification is generally considered the maximum for use on a boat without image stabilization. 7 x 50 used to be considered the ultimate small boat binocular, with image stabilization you can go to a higher magnification but still pay a penalty in low light conditions.

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Q: Are these to heavy to use on a boat? To check out other boats or view things that may help with navigation or hazards. Spotting moorings ECt

I have to jump-in on this question. These would be totally useless on any boat smaller than an aircraft carrier. The high magnification means that they must be held rock steady to be of any use and that's impossible on a boat. 8x magnification is generally considered the maximum for use on a boat without image stabilization. 7 x 50 used to be considered the ultimate small boat binocular, with image stabilization you can go to a higher magnification but still pay a penalty in low light conditions.

Exit-Pupil Diameter	2.8 Millimeters
Coating	Multi-Coated
Water Resistance Level	Waterproof
Field of View	141 Feet
Apparent Angle of View	2.7 Degrees
Zoom Ratio	25 multiplier x
Mounting Type	Tripod Mount
Eye Relief	13 Millimeters
Prism Type	Porro Prism
Special Feature	Ultra sharp focus across the field of view
Objective Lens Diameter	70
Magnification Maximum	25 x
Specific Uses For Product	personal
Item Weight	3.1 Pounds
Size Map	Full Size
Item Dimensions L x W x H	11"L x 8.7"W x 4.3"H
Material Type	Synthetic
Color	[BLACK, GRAY]

Celestron SkyMaster 25x70 Binoculars – Powerful Binoculars for Detailed Long-Distance Viewing and Binocular Astronomy – Multi-Coated Optics – Tripod Adapter & Carrying Case

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