Ultra-wide angle for maximum experience
The Sky-Watcher 4 mm Nirvana-ES eyepiece offers a huge 82° field of view. You'll see more stars and nebulae at once, without distorting the image. It is perfect for any focal length and brings deep space objects closer.
Sharp, clear and comfortable
Seven lenses in four groups provide a sharp, clear image with excellent contrast all the way to the edges. The large eye lens and soft, swivel eyecup make long observations comfortable. The 12 mm eye relief keeps your eyes relaxed even at high magnifications.
Solid and easy to use
The lens edges are blackened and internal apertures minimize reflections. The eyepiece is parfocal, so you stay sharp when changing objects. The aluminum body with rubber grips feels sturdy and comfortable. The thread allows use of standard 1.25″ filters.
What to expect
✓ Wide 82° field of view
✓ Sharp and clear image, even at the edges
✓ Comfortable eyecup for long sessions
✗ Not illuminated
✗ No motor-drive fin
Specifications
Capacity
| Feature | Description |
|---|---|
| Focal length (mm) | 4 |
| Field of view (°) | 82 |
| Eye relief (mm) | 12 |
| Optics coating | Broadband multi-coating |
| Number of groups | 4 |
| Number of lenses | 7 |
| Telescope connection | 1,25″ |
Details
| Feature | Description |
|---|---|
| Adjustable eye cup | Yes (foldable) |
| Filter thread | Yes |
| Inert gas charge | No |
General
| Feature | Description |
|---|---|
| Series | Nirvana |
| Weight (g) | 200 |
| Type | Ocular |
| Design | UWA |
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