1.25" Zoom eyepiece for telescope - 7.5mm to 22.5mm EX William Optics
A high-quality zoom eyepiece with large field of view and very good correction: no more compromises for zoom eyepieces!
The savvy astronomers will recognise this fabulous eyepiece as a fantastic premium quality zoom eyepiece.
There are many reviews available online detailing the quality of this eyepiece.
The advantages of a zoom eyepiece are multiple:
- Adjust and frame your subject perfectly without having to switch between many eyepieces and juggle plastic caps.
- Easily find your target and obverse it in more details, simply by zooming in and rotating the body of the eyepiece.
- When travelling, simply bring one eyepiece in your bag instead of a whole series.
- A single eyepiece covers most of the useful range of focal lengths for a wide variety of observation scenarios.
- Zoom from 22.5mm to 7.5mm by simply rotating the body of the eyepiece. - A parafocal design means no adjustments in focusing are required when changing the magnification of the eyepiece
- Fully Multicoated lenses for excellent transmittance
- Reduced chromatic aberration.
- A comfortable eye relief
- Internally fully blackened (lens edges and internal spacers).
- Adjustable push-up eyecup, UWAN style.
- No flaring or ghosting on high-contrast objects.
Terrific Fit and Finish
- Threaded for filters' usage.
- Smooth design for no hook up in your focuser.
Model: Zoom Eyepiece
Focal Length: 22.5-7.5mm
Lens Structure: 8 Elements / 5 Groups
Field of View: 42 - 66 degrees
Eye Relief: 20mm
Exit pupil: 0.7-0.8
Standard filter threaded