Designed with a fully multicoated 8-element/5-group lens configuration, the Celestron Ultima Edge 15mm Flat Field Eyepiece produces bright and clear views with crisp and sharp resolution across the wide 65° field of view—even at the extreme edges. The eyepiece's focal length produces a medium magnification that strikes the delicate balance between being able to see details without the appearance of distracting vibrations that can ruin a view. This Ultima Edge has a 1.25" barrel that makes it compatible with popular diagonals, Barlows, and visual backs with standard threads for filters. This version is parfocal with the 10mm and 18mm models in the Ultima Edge series, requiring little or no refocusing when changing between them. A textured collar makes inserting and removing the eyepiece easy, and the combination of comfortable 16mm eye relief and fold-down rubber eyecup make it comfortable to use with or without eyewear.

15mm Focal Length    8-Element/5-Group Lens Design    Wide 65° Field of View    1.25" Diameter Barrel    Fully Multicoated Optics    Parfocal with 18mm & 10mm in Series    Slip-Resistant Textured Surface    Fold-Down Eyecup

Related Questions and Answers

Q: 1. Hi, is the top of the eye cup moveable from the position show in the photos on this page? Does anyonme know what distance of eye relief is possible withis range? Thanks

A: Eye Relief 16.0 mm Retractable Twist-Up Eyecup

Q: 2. Will this work with the Celestron 52257 Ultima 100 spotting scope and will it be an improvement?

A: This Scope does not accept Telescope Eyepieces. My apologies. This will not work.

Q: 3. Can it be used with Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope?

A: Yes, the Celestron X-Cel LX 7mm Eyepiece (1.25"), can be be used with the Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope.

Q: 4. Will this eyepiece work with a Celestron 52257 Ultima 100 and would it inmprove the spotting scope?

A: No, the Ultima Spotting Scopes cannot accept 1.25" eyepieces.

Q: 5. Is the eye cup removable and is there thread under the eyecup?

A: No, the eye cup is not removable and there is no threads. Sincerely, Garrett at Celestron

Q: 6. If I buy this from B&H is the Celestron warranty valid in Canada?

A: Yes this warranty is valid to U.S.A. and Canadian customers who have purchased this product from an authorized Celestron dealer in the U.S.A. or Canada.

Q: 7. I read that these eyepieces are parfocal, except for one. Which one would that be?

A: Parfocal with All X-Cel LX Eyepieces

Q: 8. I have a Celestron TrailSeeker 80 spotting scope. It came with its own 8-24 zoom eyepiece. It's fine. But would this different 8-24 eyepiece be an upgrade? Is the quality higher? If so, great. If not, I'll stick with the original.

A: The Celestron 8-24mm Zoom Eyepiece (1.25") BH #CEEPZ824 • MFR #93230 is the same eyepiece that comes with the Celestron TrailSeeker 80 20-60x80 Spotting Scope.

Q: 9. Can you use filters with this eyepiece?

A: Yes, The 1.25” insert barrel is threaded to accept filters.

Q: 10. Can it fit on a celestron astromaster 114eq?

A: Yes this eyepiece can fit onto that scope since it takes a 1.25 Eyepiece opening.