The optical design of the Emerald eyepiece consists of seven lenses, offering an 82° intrinsic field of view, perfect for observation of deep-sky objects such as star clusters and galaxies, particularly with dobson telescopes!
All lenses are fully coated and the edges are blackened, ensuring high light transmission, high contrast and minimal internal reflections.
The Sky-Watcher Emerald eyepiece delivers uncompromising performance for all your astronomical observation needs. It is a versatile eyepiece that makes an ideal addition to the eyepieces included with better entry-level telescopes.
Manufactured with high precision using CNC technology, the Emerald eyepiece series combines high optical performance with elegance and a robust construction that impresses.