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Types of Telescope Eyepieces
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Flashcards
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Kellner Eyepiece
Focal Length: 20mm, Field of View: ~40 degrees
Plossl Eyepiece
Focal Length: 25mm, Field of View: ~50 degrees
Orthoscopic Eyepiece
Focal Length: 18mm, Field of View: ~45 degrees
Nagler Eyepiece
Focal Length: 16mm, Field of View: 82 degrees
Barlow Lens
Effectively doubles or triples the focal length of the eyepiece used
Monocentric Eyepiece
Focal Length: 25mm, Field of View: ~40 degrees
Zoom Eyepiece
Variable Focal Length: 8-24mm, Field of View: ~40-60 degrees
Erfle Eyepiece
Focal Length: 30mm, Field of View: ~70 degrees
Super Wide Angle Eyepiece
Focal Length: 20mm, Field of View: ~68 degrees
Reticule Eyepiece
Focal Length: 10mm, Field of View: ~50 degrees
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