Celestron Ultima Edge Eyepiece
Best premium eyepiece for hobbyists seeking sharp edge clarity.
This flat-field eyepiece delivers edge-to-edge clarity, making it an excellent choice for detailed planetary and lunar observation. Its parfocal design is a major convenience, allowing you to swap between different focal lengths in the series without needing to constantly adjust your focus.
$159.95
at
Celestron Official Website
Who it's for
- Astrophotographers and observers seeking distortion-free peripheral views
- Eyeglass wearers needing a comfortable and accessible viewing experience
- Deep-sky observers looking for crisp details in faint nebulae
Who should skip it
- Budget-conscious hobbyists looking for entry-level optical accessories
- Owners of small or lightweight telescopes with sensitive mounts
- Wide-field enthusiasts who prefer immersive 82-degree or 100-degree views
Performance breakdown
Edge-to-edge clarity
Flat-field optics eliminate distortion, keeping stars sharp across the entire view.
Light transmission
Fully multi-coated glass ensures bright, high-contrast views of faint celestial objects.
Viewing comfort
Generous eye relief makes long observation sessions easy, even with glasses.
Build quality
Machined aluminum housing provides a premium, durable feel in the hand.
Workflow efficiency
Parfocal design saves time by eliminating constant refocusing between lens swaps.
Handling ergonomics
Non-slip rubber grip ensures secure handling during cold, damp night sessions.
Key Specs
Barrel Size Diameter
1.25 inches (31.75mm)
Focal Length
15mm
Eyepiece Type
Wide-field Flat
Field Stop Diameter
19.6mm
Apparent Field of View
65 degrees
Number of Lens Elements
8
Number of Lens Groups
5
Optical Coatings
Fully Multi-Coated
Eye Relief
16mm
Parfocal
Yes
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