Pentax SMC XW Eyepiece
Best premium optics for eyeglass wearers seeking maximum viewing comfort.
This is the gold standard for observers who refuse to compromise on clarity or comfort. By prioritizing premium glass and generous eye relief, it delivers an immersive, high-contrast view that makes long nights at the telescope feel effortless. You pay a premium for the build, but the optical precision is unmatched.
$451.00
at
Adorama
Who it's for
- Stargazers seeking a panoramic and immersive viewing experience
- Eyeglass wearers requiring comfortable viewing without removing their spectacles
- Outdoor observers working in humid or unpredictable nighttime environments
Who should skip it
- Minimalist travelers or owners of small, lightweight portable telescopes
- Novice observers who struggle with precise head and eye placement
- Budget-conscious hobbyists looking for entry-level optical accessories
Performance breakdown
Optical Clarity
Lanthanum glass elements deliver exceptionally sharp, high-contrast views of the cosmos.
Viewing Comfort
Generous 20mm eye relief makes long observation sessions effortless and strain-free.
Field of View
The 70-degree apparent field offers an immersive, expansive look at deep-sky objects.
Light Transmission
Advanced multi-layer coatings ensure maximum brightness for faint, distant celestial details.
Build Durability
JIS Class 4 weatherproofing provides reliable performance in unpredictable outdoor conditions.
Aberration Control
Premium glass engineering effectively minimizes distortion across the entire viewing field.
Key Specs
Accessory Type
Eyepiece
Connection Interface
2 inch
Focal Length
40 mm
Barrel Diameter
2 inches
Apparent Field of View
70 degrees
Eye Relief
20 mm
Optical Coating
Multi-Coated
Material
Lanthanum glass
Water Resistant
Yes
Is Set
No
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