Pentax XW-40 R Telescope Eyepiece

Ideal for astronomic telescope: the XW40-R is the perfect eyepiece for viewing the mist, the planet and exploring the night sky.

Clear vision and comfortable view: the XW30 R eyepiece offers an extra wide 70° viewing angle and an extra-long eye relief of 20 mm to provide a fascinating image with a wide perspective. High-quality optics for an extraordinary image quality: the high-performance optics of the XW30-R contains high-breaking, extremely low-diffusion Lanthan glass elements to obtain a balanced image with minimal aberrations. It has been specially developed to reduce the annoying blackout effect by effectively com

SMC COATING: All air contact lens surfaces are treated with the original multi-layer coating, while all laminated surfaces are treated with the innovative partial coating to achieve light transmission of more than 90 percent (amazing 96 percent at 550 nm) via the visible light spectrum. Advanced light shielding technology: thanks to PENTAX's advanced computer simulation technology, the XW30-R features a light-shielding aperture in the most effective position to dramatically reduce internal refle

All-weather construction: the XW30-R features a weatherproof JIS Class 4 construction that allows for use in drizzle or night dew. INTEGRATED ADAPTER MOUNTING SCREW: When the rotating eyecup is removed, it also provides an adapter mounting screw/adapter mounting thread (43mm diameter with a 0.75mm pitch).

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