Celestron Ultima Edge 1.25" 15mm Eyepiece

Celestron Ultima Edge 15mm Eyepiece

Flat-Field | 65° Wide Angle | 8-Element Optics | 1.25" Barrel | Parfocal Series

Take your planetary and lunar viewing to the next level with the Ultima Edge 15mm Eyepiece. Engineered for exceptional sharpness across the entire field of view, this flat-field eyepiece offers high magnification without compromising clarity—ideal for close-up views of craters, cloud belts, and star clusters.

High-Performance Optics for Precision Viewing

• 8-Element Lens Design
  Provides superior correction across the entire field, minimising distortion and chromatic aberration while delivering crisp, high-contrast images.

• Fully Multi-Coated Glass
  All air-to-glass surfaces are fully multi-coated for maximum light transmission and colour fidelity, ensuring brighter and more detailed observations.

• 65° Apparent Field of View
  A generous wide-angle view that’s immersive yet focused—perfect for detailed planetary and lunar observing with added context around the subject.

Refined Construction, Thoughtful Features

• Premium Aluminium Body
  The eyepiece housing is CNC-machined from high-grade aluminium with a sleek, black anodised finish for durability and a professional look.

• 1.25” Threaded Barrel
  Compatible with all standard 1.25” focusers and diagonals. The barrel is threaded to accept 1.25” filters for additional versatility.

• Rubberised Grip Ring
  A contoured rubber grip surrounds the centre of the eyepiece, ensuring secure handling and precise eyecup adjustment—even in colder weather or with gloves.

Comfortable Eye Relief and Eyeglass-Friendly

• 16mm Eye Relief
  Offers a relaxed viewing experience, even for eyeglass wearers, with a fold-down rubber eyecup to block stray light and help with eye positioning.

Time-Saving Parfocal Design

• Quick Swap with Minimal Refocus
  All Ultima Edge eyepieces (except the 24mm) are parfocal—meaning they maintain focus when switching between focal lengths within the same series. Ideal for efficient, uninterrupted observing.

Note: The 24mm Ultima Edge eyepiece is not parfocal. Parfocality only applies within the Ultima Edge range and not across other eyepiece series or brands.

Whether you're zooming in on Saturn’s rings or examining lunar ridges in stunning detail, the Ultima Edge 15mm offers exceptional optical clarity and comfort in a rugged, easy-to-handle design. It’s an essential addition to any serious observer’s eyepiece collection.