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Orion - Premium 7.5mm-22.5mm Zoom Eyepiece

Model#: 08238

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Availability: In stock

$279.95

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Manufactured by: Orion

Orion - Premium 7.5mm-22.5mm Zoom Eyepiece

Details

Add a Little Zoom to Your Stargazing.

* Elegant zoom eyepiece designed for convenient, comfortable, and crisp views of the night sky
* Focal length range of 7.5mm to 22.5mm provides a variety of magnifications
* Comfortable eye relief range of 19.5mm at 22.5mm focal length, and 18mm at 7.5mm focal length
* Marked indicators for 7.5mm, 12mm, 17mm, and 22.5mm focal lengths
* Glare threaded and compatible with Orion 1.25" filters

You've just managed to center a hard-to-find object in your low-magnification eyepiece's field of view. After several moments of admiration, you decide to zoom in for a closer look. But that ususally means swapping out your eyepiece several times, as you increase magnification. The slightest bump or jiggle, and you may have to relocate and center the object all over again. Suppose after several swaps to zoom in, you realize the object is best-viewed at low magnification?

With Orion's new Premium Zoom Eyepiece, the problem is solved! The Premium Zoom is an elegant and convenient alternative to using multiple eyepieces of differning focal lengths to achieve views of differing magnification. With the Premium Zoom, you simply adjust the focal length up or down according to your preference, without having to remove the eyepiece from the telescope focuser.

The Premium Zoom Eyepiece features a focal range of 22.5mm to 7.5mm, with marked indicators for settings of 7.5mm, 12mm, 17mm and 22.5mm. The wide range of focal lengths allows you to enjoy the finer details of an object, as well as its more apparent features, while leaving the eyepiece securely seated in the focuser. The large ocular lens provides comfortable viewing with a 66 degree apparent field of view at 22.5mm, and a 42 degree field of view at 7.5mm.

The eyepiece, which consists of eight lens elements in five groups, is fully multi-coated (all air-to-glass surfaces) with anti-reflection coatings for clear, crisp views. The lens edges have been blackened to prevent glare. Dual-purpose threading of the 1.25" barrel enables the eyepiece to be used with Orion filters, while also preventing glare.

The Premium Zoom, made of black anodized aluminum construction, was designed with viewing comfort in mind. It features generous eye relief of 19.5mm at the 22.5mm focal length setting and 18mm at the 7.5mm focal lenght setting. A twist-up rubber eyeguard and rubber knurled grip ring for focal length adjustment round out the aesthetic features of this high-quality, high-performance eyepiece.

Weighs 9 oz. Dust caps are included. One-year limited warranty.

Product Specifications:

Eyepiece focal length 7.5mm - 22.0 mm
Barrel size 1.25"
Apparent field of view 66.0-deg - 42.0 -deg
Eye relief 19.5mm
Coatings Fully Multi-coated
Number of elements 8
Filter threads Yes
Parfocal Yes
Field stop diameter 24.9mm
Barrel security recess No
Blackened lens edges Yes
Rubber eyeguards Yes
Body material Aluminum
Weight (oz.) 10.00
Warranty One year

Additional Information

Name Orion - Premium 7.5mm-22.5mm Zoom Eyepiece
Manufacturer Orion
Model 08238
Eyepiece Apparent FOV 66
Eyepiece Apparent FOV2 42
Eyepiece Barrel Size 1.25"
Eyepiece Eye Relief 20
Eyepiece Eye Relief 2 23
Eyepiece Field Stop 24.9
Eyepiece Focal Length 7.5
Eyepiece Focal Length2 22.5
Eyepiece Elements 8