Celestron Ultima Edge Eyepiece - 1.25" 18mm

The Celestron Ultima Edge 18mm Eyepiece features flat-field optics designed to deliver sharp, clear images from the center to the edge of the field of view. Its eight-element optical design and fully multi-coated lenses maximize light transmission for excellent image clarity. With a generous 65° apparent field of view, it is ideal for observing planets, stars, and details on the Moon’s surface. Its magnification makes it well suited for viewing smaller celestial objects in greater detail.

Durable Design and Comfortable Viewing

The eyepiece features a high-grade machined aluminum housing with a black-anodized finish for durability. Its 1.25-inch threaded barrel accepts compatible filters and adapters and fits standard 1.25-inch star diagonals and focusers. A specially designed molded rubber grip provides secure, slip-resistant handling during observing sessions. With 20mm of eye relief and comfortable rubber eyecups, the Ultima Edge 18mm provides a comfortable viewing experience for users with or without eyeglasses.

Convenient Parfocal Design

Ultima Edge eyepieces are designed to be parfocal, allowing you to switch between compatible eyepieces in the series with little or no additional focusing. This makes it easy to move between different magnifications and spend more time observing.

Note: The Ultima Edge 24mm is not parfocal. Parfocal compatibility applies only within the Ultima Edge series and does not guarantee that focus will be maintained when switching to eyepieces from other brands or series.

Features

• 18mm parfocal Ultra Flat Field eyepiece designed for 1.25” focusers
• Incredibly crisp views from center to edge of field
• Fully multi-coated, 8-element lens design for excellent light transmission
• Wide 65° apparent field of view allows you to see more of the night sky
• Generous 20mm eye relief and fold-down rubber eyeguard for comfortable viewing with or without eyeglasses
• Molded rubber grip ring for non-slip handling