The 2" diameter barrel 82°-Series 18 mm Eyepiece from Explore Scientific is a wide-field telescope eyepiece designed for planetary and deep-space observations. Its wide exit pupil and long eye relief makes this eyepiece ideal for comfortable viewing for extended periods. The contrast is enhanced by a fold-down rubber eyecup that prevents stray light from leaking into your eye.
Anti-reflective multicoated optics ensures bright, high-contrast images with true color transmission across the entire wide field of view. The 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.
Wide exit pupil and long eye relief ensure comfortable long-duration observation through your telescope.
Fold-down eyecup prevents peripheral light from leaking into your eye, causing blurring and dimming of the image
|Focal Length||18 mm|
|Eye Relief||13 mm|
|Field Stop Diameter||25.3 mm|
|Apparent Field of View||82°|
|Dimensions||3.5 x 2.2" (8.9 x 5.6 mm)|
|Weight||13.7 oz (390 g)|
|Package Weight||1.45 lb|
|Box Dimensions (LxWxH)||5.5 x 4.5 x 4.0"|