Arcturus UltraWide "Convertible" 20/30mm Eyepiece (2 inch)
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- 100% Brand New and High Quality. Multi-Coated 2" 80 degree F20mm UWA telescope eyepiece, packed in a protective plastic case. Compared with other eyepieces, the Ultra-Wide 80 Degree Eyepieces are equipped with plastic case, which can better protect eyepieces and against dust than the cap.
- Barrel Size: 2". This superb ultra wide angle eyepiece has 80 degree field of view.
- 7-Elements in 5 Groups Design. Fully multi-coated, soft eyecup. The inside of the adapter is fully threaded to minimize reflections.
- Threaded for filters and Barlow lens: 2-inch standard female thread to fit a filter etc at the rear end, very well built.
- Focal Length: 20mm; Eye Relief: 24 mm; Design: 7-Elements in 5 Groups; Coating: Fully coated Broadband Green Film; Color: Ultra black design.