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smc PENTAX XW40-R - Übersicht

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Long-Focal-Length Eyepieces, Ideal for Nebula and Star Cluster Observations

Thanks to their long-focal-length design, the new XW30-R and XW40-R eyepieces will let you observe large celestial bodies spreading across the night sky, such as the Pleiades star cluster and the Andromeda Galaxy, in their entirety. *
* When mounted on an astronomical telescope with a focal length of 1000mm.

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 Quality

The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.

PENTAX-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency

All 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.

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