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The Orion GiantView 25x100 Astronomy Binocular (#9326) is a wonderfully well made binocular. The top-quality BAK-4 prisms and precise internal baffling ensure sharp images and pleasing contrast. The binocular barrels are cross-reinforced with an aluminum rod and objective cell cuffs for maximum structural rigidity and unflinching optical alignment. A sliding 1/4"-20 threaded mounting post is held captive on the rod, for convenient coupling of the binocular to a tripod, which is highly recommended due to its size and high magnification. Since the mounting post can be slid forward and backward, it's easy to achieve optimum balance of the binocular once mounted. This big GiantView 25x100 binocular provides a generous 4mm exit pupil and the serious magnifying power you need to resolve subtle details in your target object. The eyepieces focus individually, which affords a higher degree of focusing precision than center-focus mechanisms. The long 18mm eye relief even lets eyeglass wearers see an unrestricted field of view. Big and heavy astronomy binoculars provide breathtaking views of starry skies, but they require a very stable platform for comfortable stargazing use. While standard tripods are usually sufficient for daytime use of big binoculars to scan the horizon, using them to point big binoculars to the sky is another story. Inherent height limitations and awkward adjustment controls of standard tripods can lead to shaky, neck-straining views of the heavens above. This crowd-pleasing mount's (#5752) parallelogram design can be used to raise and lower attached binoculars without disrupting the aim. This wonderful feature is a lifesaver when stargazing with family and friends of varying height, so each person can enjoy the view of the same object. With the Orion Monster Parallelogram Mount, you can position attached binoculars up to 6' and as low as 2'6". An optional pier extension is sold separately for additional height. Includes anodized L-bracket for binocular attachment, convenient handle for easy slewing, and fully assembled tripod. This anodized aluminum spacer block (#7590) is designed to be used when attaching the #9326 Orion GiantView 25x100 binocular onto the #5752 Orion Monster Parallelogram mount. It raises the binocular up above the L-bracket far enough (15mm) to allow for the full range of interpupilary adjustment, as well as helps balance the binocular on the mount when viewing at higher angles. This spacer will also work on any photographic tripod, when a little extra height is needed for a camera, spotting scope, or binocular. Features a 1/4"-20 threaded tripod stud on top, and 1/4"-20 threaded tripod hole below.
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.
Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.
Also commonly referred to as "power", magnification is a measure of how much closer an object appears when viewed through the instrument. For example, a 10x binocular will make an object appear 10-times closer than it would normally appear. An object positioned 100 yards away would appear as if it was just 10 yards away in a binocular with 10x magnification. The human eye is considered 1x magnification.
For telescopes, the optical diameter (also known as aperture) is the size of a telescope's main light-collecting lens or primary mirror, measured in millimeters or inches. Telescopes with larger optical diameters collect more light, which leads to an increase in brightness and image resolution compared to smaller instruments.
For binoculars, the optical diameter (also known as objective lens diameter) is the size of each of the front-facing objective lenses of a binocular measured in millimeters. Binoculars with larger objective lenses collect more light, which increases image resolution and brightness. Binoculars with larger objective lenses are recommended for low light situations, and binoculars with at least 50mm or larger objective lenses are recommended for pleasing astronomical observations at night.
The edge-to-edge angular diameter of the image displayed in a binocular as seen by the eyes of the observer. It is an inherent specification for a given binocular design. The "angular diameter" of an object is defined as the angle an object makes (subtends) as seen by an observer.
The diameter of the circle of light exiting the binocular. Exit pupil is calculated by dividing the objective lens diameter by the binocular magnification. For example, a 10x50 binoculars has an exit pupil of 5mm (50/10=5). Knowing the exit pupil of a binocular can help determine the optimal binocular fro your needs. If a binocular exit pupil is larger than the dilation of the user's pupil, resolution is reduced since the maximum amount of light is not entering the eye. Typically under true dark adaptation a healthy human eye will dilate to approximately 7mm. This number can decrease with age and health factors.
Binocular lenses and prisms are often coated with anti-reflective material to minimize light loss as light travels through the multiple optical surfaces of a typical binocular. Coatings help maximize the amount of light transmitted through each glass surface of a binocular, so as much light as possible reaches the observer's eyes to provide a bright and sharp image.
Good lenses are at least "fully coated," with a single layer of magnesium fluoride coating applied to each air-to-glass lens surface. Multiple layers of coatings are even more effective; the term "multi-coated" means one or more air-to-glass lens surface has multiple coatings. "Fully multi-coated" optics are even better, meaning all lens surfaces have multiple layers of anti-reflective coatings applied for maximum light transmission and optimal image quality.
Porro Prisms:
A binocular prism system that contains two right-angle prisms in each barrel offset from one another, requiring that the objective lenses be spaced further apart than the eyepieces. Optically, porro prisms often perform better than their roof prism counterparts.
Roof Prisms:
A compact binocular prism system that allows the objective lenses to line up directly with the eyepieces and hence yields a more portable binocular. Roof prism binoculars lose slightly more light to reflections than porro prism binoculars. High-quality roof prism binoculars compensate for this with special optical coatings.
Orion GiantView 25x100 Astronomy Binocular Binocular lens caps Hard binocular carry case Lens cleaning cloth Orion Monster Parallelogram Binocular Mount body SkyView Pro tripod Navigation handle L-Bracket w/ captive 1/4"-20 threaded post Mini-dovetail and mini-dovetail rail Two 11-lb counterweights Counterweight shaft Allen wrenches: 4, 5.5 and 6mm Nut key 13/14 1/4"-20 socket screw Spacer
Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.
A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.
Standard Delivery: $0.00Standard Delivery to Canada: $75.003 Day Delivery: $158.002 Day Delivery: $158.00Next Day Delivery: $187.00
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