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The 1.25" diameter barrel Ethos-SX 4.7mm Eyepiece from Tele Vue is a compact durable wide-field telescope eyepiece designed for lunar and planetary observations. The Ethos series deliver true field size of a longer focal length, narrower apparent field eyepiece with the benefits of higher power and darker sky background. Each eyepiece is optimized for high contrast, comfortable eye relief; and control of astigmatism, optical distortion, angular magnification, and low pupil sensitivity for daytime use.
Wide pupil diameter and long eye relief make the 4.7mm-SX eyepiece ideal for comfortable long-duration observation. Contrast is enhanced by flat-finished baffles that prevent stray light from degrading the image transmitted through the ocular. Anti-reflective coatings on all optical surfaces are tuned to the composition of each element, ensuring bright, high contrast, color faithful images from center to edge.
Images are color neutral from center to edge, even as the observed object approaches the field stop. Anti-reflective multicoated lenses are tuned for each element in the optical path, ensuring high contrast and color faithful light transmission.
Wide apparent field of view displays a broad image with minimal optical distortion, ideal for planetary and lunar observation.
Wide pupil diameter and long eye relief ensure comfortable long-duration observation through your telescope.
Stray light is prevented from degrading the transmitted image by flat finished baffles and the fold-down rubber eyecup.
1.25" diameter barrel, with an included 2" adapter to expand the capabilities of the eyepiece.