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Focal length: 18mm. Eyepiece clamp diameter: 2"

6 elements in 4 groups
Optical design is a set of optical elements that is assembled in a certain way
2
The barrel diameter of the accessory must match the barrel diameter of the device; otherwise, an adapter will be required
Fully multi-coated
The optics coating improves the image quality
Availability

Product ID 71087
Brand Explore Scientific
Warranty 2 years
EAN 4007922199740
Shipping Weight 0.378 kg
Type ultra wide-angle
Description

Explore Scientific 82° Series extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics.

The visual effect of these eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The 82° Series eyepieces come with a twist-up rubber eye-guard that raise to the desired height for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves.

All 82° Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast.

Specifications
Product ID 71087
Brand Explore Scientific
Warranty 2 years
EAN 4007922199740
Shipping Weight 0.378 kg
Type ultra wide-angle
Optical scheme 6 elements in 4 groups
Barrel diameter, in 2
Lens coating fully multi-coated
Focal length, mm 18
Field of view, ° 82
Eye relief, mm 13
Field stop diameter, mm 25.3
Side edges blackening
Parfocal
Argon-purged
Waterproof
Eyecup rubber, foldable
Protective caps included