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The 1.25" diameter barrel 82° Series 6.5mm Eyepiece from Explore Scientific
is engineered to deliver a wide field of view with a long eye relief,
making it ideal for planetary and deep-space observations. Its long eye
relief makes it extremely comfortable during long observation sessions
while offering you the ability to utilize the averted vision techniques
that allow you to see faint details of elusive objects like wispy
nebulae and galaxies. Viewing comfort is also optimized for eyeglass
Proprietary EMD anti-reflective multi-coatings ensure
bright, high-contrast images with true color transmission across the
entire wide field of view. To keep internal reflections to a minimum and
improve contrast, the inside of the barrel is blackened, as are the
edges of the lenses, to minimize the scattering of light within the
lenses themselves. A fold-down rubber eyecup prevents stray light from
leaking into the eye, further boosting contrast.
All eyepieces in
the 82° Series are parfocal, so there will be little to no need to
refocus when moving from one focal length to the next. This eyepiece
features a textured surface for a sure grip when changing it out, and it
is argon filled for water and fogproof performance when used in extreme
temperatures and climates.