With most eyepieces, stars look sharp in the center of the field of view, but start getting fuzzy and flared toward the edge. To get better, "flat-field" performance, you have to pay big bucks for exotic ocular designs. Not anymore. Orion Edge-On eyepieces deliver remarkably flat fields — pinpoint-sharp stars from the center to the edge of the viewing circle. And best of all, their price won't flatten your wallet!
Orion Edge-On Flat Field 12.5mm Eyepiece
You'll be as amazed by the value as you are by the views. Their 5- or 6-element optical design eliminates field curvature for distortion-free images. And Edge-Ons are parfocal, so you can change eyepieces without refocusing. With their big eye lenses, fully multi-coated lens elements, long eye relief, generous fields of view, twist-up eyeguards, and 1.25" barrels threaded for filters, Edge-On eyepieces have the features and quality you'll appreciate. Get the eyepieces with a flat-field edge — Orion Edge-Ons!
Orion Edge-On Flat Field Eyepiece Features...
- Orion Edge-On Flat Field Eyepieces offer premium performance at an amazing price!
- The proprietary flat-field design means you'll experience sharp focus from the very edge to the center of the viewing field.
- The Orion Edge-On Flat Field Eyepiece features multi-coated optics, all-black anodizing, twist-up eye guards, and a parfocal design.
- The large eye lens and long eye relief of 20mm means comfortable viewing, even for long observing sessions and for folks who wear glasses.
- Additional Information
SKU OR-8882 Manufacturer Orion Optical Design Wide Angle Barrel Size 1.25" Warranty 1 Year Warranty Eyepiece Field of View - Apparent 55º Eyepiece Focal Length 12.5mm Eyepiece Eye Relief 20mm Eyepiece Manufacturer Series Orion Edge On Eyepiece Weight 6 oz. Field Stop 15.6mm Number of Lens Elements & Groups 6 elements Special Feature None Comes with Dust Caps? Yes Comes with Eye Guard? Yes
- Included Items
- Orion 12.5mm Edge-On Flat Field Planetary 1.25" Eyepiece
- Dust Caps
- Questions & Answers
Product QuestionsI have a f/5 dobsonian and I have to be really careful with descriptions provided because they are probably written for long focal scopes . Very seldomly, do they claim to work as well for short fast focal lengths..
Question by: Dirty Lens on Apr 2, 2017 6:51:00 PMAs an owner of a 12" f/5 dob myself, I agree. f/5 or faster light cones separate the well-corrected widefield eyepieces from those that can't handle coma. A coma corrector is always the best option long term, as this allows nearly any eyepiece to be used, but a moderately-wide eyepiece designed to deliver a flat field is usually a safe bet at f/5.0.Answer by: Chris Hendren (Admin) on May 4, 2017 2:53:00 PM
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