WA Super Plössl eyepiece 20 mm 58°

• 20mm focal length eyepiece for high magnification observation
• Modified Super Plössl type optical construction with 5 lenses
• 58° apparent field of view, comfortable 16mm eye relief
• Light and fluid 31.75 mm

Eyepieces are essential complements to any astronomical instrument . They are what ensure the magnification of the image, the optical tube being a simple light collector. The image produced at focus by a telescope or astronomical telescope is tiny.

You must always adapt the magnification to the star you are looking to observe : High magnification for observing planets, low magnification for observing deep sky objects. Just as It is important to adapt the increases according to the conditions of transparency and turbulence of the sky, There is no point in increasing too much when conditions are bad, the images will not be better. It is better to have a small, sharp image than a large, blurry image that is difficult to focus on.

The Sky-Watcher UWA (Wide Angle) eyepieces are Super Plössl type and consist of 5 multi-layer lenses with anti-reflective coating for excellent light transmission. This optical design corrects chromatic aberration and adapts to all types of instruments (reflector, refractor and catadioptric) with a 31.75 mm focusing system. This fifth additional lens, compared to the classic Super Plössl, increases the apparent field to 58° (instead of 52°). The comfort of use is also improved with an eye relief of 16 mm (ideal for glasses wearers) and a wide rubber band for a firmer, easier grip.

They have a retractable windshield and a 28 mm thread pitch for adapt 31.75 mm format filters .