Real "all in one" - zoom eyepiece.
A high-quality eyepiece with a zoom (smoothly variable focal length, and thus variable zoom) will greatly increase the comfort of astronomical observations, due to the lack of the need to change the glasses in order to change the applied magnification. It does not replace glasses of the highest quality with a large, flat field of view, but it will allow you to hide most glasses Kellner, Ploess or SP into the drawer.
Eyepiece equipped with a comfortable eyecup and filter reduction.
| • Focal length: || 7-21 mm |
| • Own field of view: || 35 ° (at 7 mm) - 52 ° (at 21 mm) |
| • Distance of the exit pupil: || 18 mm (at 7 mm) - 25 mm (at 21 mm) |
| • Diameter of binding: || 1.25 inches |
| • Anti-reflective layers: || FMC (all air - glass boundaries are covered with layers) |
| • Construction: || 7 elements in 4 groups |
| • Weight: || 160 g |
(the eyepiece has a 1.25 inch filter thread)