A good quality eyepiece with zoom (smoothly variable focal length, and thus variable zoom) will allow a great increase in 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.
The range of obtained magnifications depends on the focal length of the telescope. For example, for a telescope with a focal length of 1000 mm we get magnification from 1000/24 ••= 41.5x to 1000/8 = 125x
Parfocal eyepiece - focal position does not change when the focal length changes - the eyepiece maintains focus in the whole focal length range at the highest magnification, i.e. at all magnifications for this eyepiece, which guarantees great convenience of use (no need to set the focus sharply) Eyelectric lift when changing the magnification).
Under the eyecup there is a M42x0.75 (T2) thread, which allows you to connect any intermediate ring for connecting the DSLR to the eyepiece and in this way make direct projection pictures (Standards Coś: Canon EOS / Nikon / Sony Alfa / Pentax K / Olympus E)
Eyepiece equipped with a comfortable eyecup and filter reduction.
| • Focal length: || 8-24 mm |
| • Own field of view: || 45 ° (at 24 mm) - 60 ° (at 8 mm) |
| • Distance of the exit pupil: || 18 mm (parfocal arrangement) |
| • Diameter of binding: || 1.25 inches |
| • Anti-reflective layers: || FMC (all air - glass boundaries are covered with layers) |
| • Construction: || 7 elements in 4 groups |
(okular zoom 8-24mm / 1.25 ")
(after removing the eyecup, the eyepiece has a T2 thread, M42x0.75, for connecting the body of a DSLR camera)
(eyepiece with T2 ring inserted)
(eyepiece screwed into the T2 ring - ready for projection)
(eyepiece in the telescope ready to take pictures - lens telescope)
(eyepiece in a telescope ready to take pictures - Newton telescope)
(the eyepiece has a filter thread for 1.25 "filters)