If you are looking to move up to a higher quality eyepiece the Omni series provides more enhanced features in a wider selection of focal lengths. Celestron designed this series with the finer points in mind so you, the user, can benefit from the features that make this series unique. The Omni is a 4 -element premium symmetrical Plössl optical design. Features include blackened lens edges to minimize internal reflection and maximize contrast, multi-layer coating group on each lens surface to maximize light transmission and contrast, and each Omni goes through a two-step anodizing process to prevent reflection from the top eyepiece barrel, unlike most other manufactures who use reflective surfaces. Threaded barrels accept 1-1/4" Celestron thread-in filters.

Focal Length	Item #	Eye Relief	Apparent Field	Size
4mm	93316	6mm	52°	1-1/4"
6mm	93317	5mm	52°	1-1/4"
9mm	93318	6mm	52°	1-1/4"
12mm	93319	8mm	52°	1-1/4"
15mm	93320	13mm	52°	1-1/4"
20mm	93321	20mm	52°	1-1/4"
25mm	93322	22mm	52°	1-1/4"
32mm	93323	22mm	52°	1-1/4"
40mm	93325	31mm	43°	1-1/4"

If you are looking for an eyepiece that excels for planetary viewing, then Celestron’s X-Cel offers the unique features you are looking for. A 6-element fully multi-coated optical design, the X-Cel utilizes extra low dispersion (ED) glass on its most highly curved surfaces, to minimize chromatic aberration that can hinder sharp planetary views. With a wide 55° apparent field of view, and a large 25mm clear aperture the X-Cel is one of the most comfortable eyepieces to use. Every X-Cel eyepiece is parfocal with each other, meaning little or no focusing is needed when changing from low to high power. The X-Cel comes with soft rubber eyecups and a durable plastic case. In addition, if you are an eyeglass wearer, you will enjoy the 20mm eye relief available on each of the X-Cel focal lengths. Threaded barrels accept 1-1/4" Celestron thread-in filters.

Focal Length	Item #	Eye Relief	Apparent Field	Size
2.3mm	93386	20mm	55°	1-1/4"
5mm	93387	20mm	55°	1-1/4"
8mm	93388	20mm	55°	1-1/4"
10mm	93389	20mm	55°	1-1/4"
12.5mm	93390	20mm	55°	1-1/4"
18mm	93391	20mm	55°	1-1/4"
21mm	93392	20mm	55°	1-1/4"
25mm	93393	20mm	55°	1-1/4"

For use with digital and CCD cameras.

Moon & Skyglow Filter

For use with telescopes that suffer colour aberation.

Broadband Nebulae Filter.