Sky-Watcher 4 mm Planetary UWA: maximum moon detail in calm skies
The Planetary series is built for high magnification with viewing comfort. Whereas classic short eyepieces force your eye against the glass, this series maintains 16 mm of eye relief: relaxed viewing, even with glasses. Five multi-coated lenses deliver the sharp, high-contrast image that lunar and planetary detail demands.
At 4mm, with good seeing, you'll get the most out of lunar craters, planetary disks, and close double stars, especially on telescopes with short to medium focal lengths.
Features
- 58 degree apparent field of view
- 16 mm eye relief, comfortable for eyeglass wearers
- 5 multi-coated lens elements
- 1.25 inch vatting met filterdraad, opvouwbare oogschelp
Compatibility
Fits in a 1.25 inch focuser or diagonal. Rule of thumb for maximum useful magnification: twice the aperture of your telescope in millimeters.
Specifications
| Focal length | 4 mm |
| Apparent field of view | 58 degrees |
| Eye relief | 16 mm |
| Optics | 5 lenses, multi-coated |
| Mount | 1.25 inch with filter thread |
| Eyecup | Foldable |
The disassembly of Sky-Watcher is a base that will last you for years. Unsure which mount is best for your telescope and your goals? Contact us, we'd be happy to help you decide.
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