The Sky-Watcher 1.25 20mm Ultra Wide Telescope Eyepiece offers a generous 66° apparent field of view, allowing more sky to be viewed at one time.
This awesome telescope eyepiece provides a sharp image right across the field.
The rubber eyecups making for comfortable and keep out extraneous light.
Sky-Watcher 1.25 20mm Ultra Wide Telescope Eyepiece
The Focal Length of your telescope will determine the magnification and field of view of the eyepiece, here are some common lengths as a guide:
- 500mm = 25x @ 2.64 deg.
- 600mm = 30x @ 2.2 deg.
- 700mm = 35x @ 1.89 deg.
- 800mm = 40x @ 1.65 deg.
- 900mm = 45x @ 1.47 deg.
- 1000mm = 50x @ 1.32 deg.
- 1200mm = 60x @ 1.1 deg.
- 1500mm = 75x @ 0.88 deg.
- 2000mm = 100x @ 0.66 deg.
- 2500mm = 125x @ 0.53 deg.
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