About this product
Part Number: E20W-CU04
StellaLyra 20mm 2" 80º Long Eye-relief, Ultra-Wide Eyepiece
Premium eyepieces manufactured in Taiwan.
StellaLyra 80º long eye relief / ultra-wide eyepieces are manufactured to a very high standard by Long Perng in Taiwan.
Fully multicoated, high-index, low-dispersion Lanthanum glass delivers exceptionally clear, sharp, bright views with excellent colour aberration control.
All focal lengths have an eye lens and field stop larger than 30mm so are very comfortable to use and 20mm eye-relief so you can enjoy the view even whilst wearing eye-glasses.
A useful M50x0.75 thread is hidden under the eye-guard so a DSLR or other suitable camera can be connected using the optional StellaLyra Photo Adapter.
Available in a range of focal lengths with 1.25" or 2" nosepiece.
Includes two end caps and a bolt case for storage.
- 2" 20mm 80º LER / UWA Eyepiece
- 8 element / 6 group design
- 80º Field of View
- 20mm Eye Relief
- >30mm Eye lens and field stop
- Fully multi-coated optics
- Blackened lens edges
- CNC machined aluminium body with rubber grip & tapered nosepiece
- Twist-up rubber eye-guard
- M50x0.75 Thread under the eye-guard for attaching to a camera
- Threaded for 2" astronomy filters
- Manufactured by Long Perng in Taiwan
Eyepiece Field of View Simulator
|Focal Length ||20mm |
|Nosepiece Size ||2" / 50.8mm |
|Apparent Field of View ||80º |
|Eye Relief ||20mm |
|Optics ||Fully Multi-Coated, Blackened Lens Edges |
|Lenses ||8 Elements in 6 Groups |
|Filters ||Accepts filters with 2" Threads (M48x0.75) |
|Accessories ||Two Lens Caps, Bolt Case |
|Average Rating (1 Review): |
21 May 2022 | Clive
SL 2" 20mm 80° EP.
This is an extremely competent eyepiece, with great eye relief and sharp images right to the edge of field. I can't detect any off-axis aberrations, edge of field brightening or coma. A target is easily followed across the whole FOV and you don't have to peer 'into the corners' to see the edges. It's hard to find any negatives at all.
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