Excerpt: Excellent quality optics! Just the right objective lens size to weight ratio. Not too heavy for short-medium use, but might get heavy for long term use.Night use: I used these in a light polluted area and was still able to see M8 - Lagoon Nebula, M31 - Andromeda Galaxy, M13 - Great Cluster in Hercules and several other nebulae and globular clusters. While you can't resolve Saturn rings, you can see that it has a distinct oblong shape.
Pros: Quality Lenses, Strong Construction, Waterproof, Works Well With Glasses
Summary: Simply put these are excellent binoculars - excellent clarity during the day and also at night. On a moonlit night, I can see a fair distance into the woods behind my house. Of course the snow helps. I wear glasses but I do not need them viewing through these binoculars which is a blessing because glasses are a pain when using optics. Focus is easy and they are relatively light weight and easy to carry. Nikon utilizes good quality glass for its optics.
Excerpt: My primary purpose for these glasses will be for viewing the night sky objects. They are the size most recommended for this purpose. The 50mm (2 inch) frontlenses gather plenty of light and the 10 power magnification is adequate. Larger glasses are just to heavy to be hand-held and the field of view would be too narrow. These should be perfect for viewing comets although ISON blew apart before I ordered these.
Summary: The best quality/price ratio. A little too heavy for hiking so I will use it on the boat, bird/nature watching. For hiking i'm getting Nikon Ex 8x40. The only two things I don't like are lens covers, which are very easy to loose and focus wheel, which is a little too stiff for me. I'm used to my very smooth old Zeiss 10x50 . Anyway, money well spent.