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Home Eyepieces Pentax Eyepieces Pentax XW 5mm Eyepiece
Coming soon - The high-performance XW-series 5mm eyepiece incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations. The XW range are specifically designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.SMC coatings and specially applied internal partial coatings provide an extraordinary 96% light transmission at 550nm.
Exceptional performance 5mm focal length high power eyepiece for astronomical telescopes, a premium wide-angle eyepiece with a long and comfortable 20mm eye relief and a waterproof body. Weatherproof construction for greater durability and long term field use is a reassurance of quality manufacturing. Features include high-grade Lanthanum glass with high refraction and low dispersion for superb corrections Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high light transmission performance, essential for astronomical observation where you need to use all the available incoming light possible. Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch.PENTAX Multi-Layer Coating for Outstanding Light TransmissionAll lens surfaces that come in contact with air are treated with the original multi-layer coating, while all laminated surfaces are treated with the innovative partial coating, to offer the light transmission efficiency of more than 90 percent (an astonishing 96 percent at 550nm) over the visible light spectrum.Advanced Light-Shielding Technology for Improved Image ContrastThanks to PENTAXs advanced computer simulation technology, the XW series features a light-shielding diaphragm at the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image.Clear, Comfortable Viewing assured by 70° Apparent Angle of View and 20mm Eye Relief. All smc PENTAX XW-series eyepieces feature an extra-wide 70-degree apparent angle of view and an extra-long 20mm eye relief to deliver an exciting, wide-perspective image.High-Grade Optics for Exceptional Image QualityThe high-performance XW-series optics incorporate high-refraction, extra-low-dispersion lanthanum lens elements to produce a well-balanced image with minimal aberrations. Specifically designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.5mm focal length with 1.25" barrelSMC multi coatingsLanthanum low dispersion lens Threaded for 1.25" filters20mm eye relief70 degree fieldRotating adjustable eyecupJLS class 4 waterproofingDust caps & storage bottle included