William Optics Swan Eyepiece
Best wide-angle eyepiece for comfortable, immersive deep-sky stargazing.
A high-value, wide-field eyepiece that excels at delivering expansive, breathtaking views of the Milky Way. It prioritizes comfort with generous eye relief and maintains excellent contrast through thoughtful internal baffling, making it a reliable choice for deep-sky observation.
$130.00
at
Williamoptics
More SWAN options
Who it's for
- Eyeglass wearers needing comfortable, extended viewing sessions
- Stargazers seeking expansive views of deep-sky objects
- Budget-conscious astronomers prioritizing high-contrast views
Who should skip it
- Owners of fast telescopes sensitive to edge distortion
- Travelers needing lightweight, compact equipment setups
- Planetary observers requiring absolute freedom from internal reflections
Performance breakdown
Field of View
The 72-degree apparent field creates a truly immersive, wide-angle stargazing experience.
Viewing Comfort
Generous 28mm eye relief makes long observation sessions fatigue-free and easy.
Optical Versatility
The 40mm focal length excels at framing large nebulae and star clusters.
Build Compatibility
Standard 2-inch barrel design integrates seamlessly with most modern telescope focusers.
Ease of Maintenance
Included dust caps and eye guard simplify essential lens protection routines.
Reliability
Backed by a solid two-year warranty for peace of mind.
Key Specs
Focal Length
40mm
Barrel Size
2"
Apparent Field of View
72 degrees
Eye Relief
28mm
Connection Interface
2 inch
Accessory Type
Eyepiece
Dust Caps Included
Yes
Eye Guard Included
Yes
Warranty
2 Year Warranty
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