Objective lens diameter: 3.9″ (100 mm)
These observers often find that their eyes can not get as close to the eyecups or eyepieces of field glasses and telescopes, requiring them to remove their glasses for a comfortable view.The Opticron Adventurer II WP 10×50 binocular is the perfect solution for spectacle wearers, given that an excellent eye relief of 0.7 inches (17.78 mm) is provided– eye relief being the distance from the eyepiece at which the user can still see the entire field of view. (0.86 kilograms), astronomers who like to mess around in nature-watching and globetrotting will be grateful for the workable weight: we discovered that the Vortex 10×50 Crossfire HD binocular is simple to hold for long periods of time when observing the night sky, enabling us to take in steady, high-definition views of the moons surface area, intense worlds and deep-sky targets. Eye relief: 0.6″ (15 mm) High magnification Tripod adapter includedGreat clarity and contrastHeavy, tripod neededThe Celestron SkyMaster 25×100 binocular is genuinely like a pair of huge telescopes: touring the paradises with them is like viewing the night sky utilizing two four-inch (100 mm) refractors, with included 25x magnification. Where the view was let down is by the collimation of the lenses being off, but this can be changed via little screws– albeit this should not have to be done for a brand-new binocular straight out of the box. Saturn provided a test of this binocular: its rings were not resolvable on their own, however the skywatcher will observe guaranteed ansae– the extension of the rings at either side of the world, offering Saturn an oblate shape.When viewing stars, the images are sharp and determine at the centre of the field.