Explore Scientific UWA 9mm 100° 2″ eyepiece
If you are looking for an eyepiece that will truly immerse you in the view of the universe, the Explore Scientific UWA 100° series is exactly what you need. The 9mm focal length model offers a full 100° apparent field of view - an experience that astronomers rightly compare to looking out of a spacecraft window. This eyepiece is not just a tool; it is a gateway to detailed yet panoramic observation of the night sky.
Ultra wide angle optics with premium coatings
The eyepiece is built in the UWA (Ultra Wide Angle) design and features fully multicoated optics across the entire optical system. This treatment ensures maximum light transmission, minimizes unwanted reflections and significantly increases image contrast. The result is a sharp, bright and color-accurate image across the entire field of view - from center to edge. For visual observers of asteroids, star clusters and nebulae, this makes a real difference in the quality of the viewing experience.
Practical features for comfortable observing
The eyepiece is equipped with a foldable eyecup that allows comfortable observing both with and without glasses by adjusting the eye relief height. The eyepiece body is filled with inert argon gas, which eliminates internal fogging and protects the optics from moisture and mold - a feature appreciated by anyone who observes in variable weather conditions. The standard 2″ filter thread makes it easy to attach UHC, OIII or other astronomy filters without any adapters.
Compatibility and ideal use cases
The eyepiece connects to a telescope via a standard 2″ (50.8 mm) barrel, making it compatible with the vast majority of modern astronomical telescopes equipped with a 2″ focuser. The 9mm focal length makes it an excellent choice for medium magnification with maximum field of view - an ideal combination for observing planetary nebulae, galaxies and open star clusters.
Who is this eyepiece for?
The Explore Scientific UWA 9mm 100° eyepiece will be most appreciated by experienced visual observers who want to get the most out of their telescope. A hundred degrees of apparent field of view delivers an immersive observing experience that cheaper eyepieces with 60-70° simply cannot offer. At the same time, the argon-filled body and multicoating guarantee a long service life and reliable performance in any weather. Whether you observe from your garden or travel to dark sky sites far from light pollution, this eyepiece will be a faithful companion on your astronomical nights.
Key specifications
| Parameter |
Value |
| Focal length |
9 mm |
| Apparent field of view |
100° |
| Barrel diameter |
2″ (50.8 mm) |
| Optical design |
UWA (Ultra Wide Angle) |
| Coating |
Fully multicoated |
| Fill gas |
Argon |
| Filter thread |
2″ standard |
| Eyecup |
Foldable, adjustable eye relief |
