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The 7-21mm Zoom Eyepiece allows you to choose from a variety of magnifications in a flash! Simply grip the rubberized barrel and turn it slowly while looking through the eyepiece, and then pick the best power for the object you are observing. Alternatively, you can use the lowest magnification (21mm) to find an object and center it in your field of view, and then increase the power until the desired view is achieved. It is fast and easy, and lets you examine any object at various magnifications without requiring you to physically change eyepieces
- Fully Multicoated
- Large 16-18mm eye relief
- Wide angle view
- Threaded to accept any 1.25″ filters
- Fits any telescope having 1.25″ focuser
SPECS:
| Focal Length: | 7mm – 21mm |
| Apparent Field of View: | 40° – 57° |
| Eye Relief: | 16mm – 18mm |
