Products

High-power eyepieces used to mean a choice: pay for premium glass, or squint through a cheap 4mm Plössl with 3mm of eye relief and a field the size...

This Astro-Tech 5mm Paradigm Dual ED eyepiece is excellent for medium to medium high magnification viewing with short to medium focal length refrac...

Seven millimeters is the high-power eyepiece in a 1.25" barrel — the one that turns a 10-inch Dob into a planet machine. At 179x, Jupiter shows clo...

This Astro-Tech 8mm Paradigm Dual ED eyepiece is a logical choice for high quality/high magnification observing with long focal length refractors, ...

This "universal" prime focus adapter drops into the 1.25" focusers of any reflector or refractor telescope using 1.25" visual accessories. It is us...

This Celestron Oxygen III light pollution filter has a very narrow passband for very high contrast on emission nebulas, making it a good choice for...

A Star Diagonal lets you view objects that are at a 90° angle from the direction the telescope is pointing, thereby allowing comfortable viewing wh...

This Celestron ultra high contrast (UHC) light pollution filter has improved contrast when compared with the wider passband of a broadband filter, ...

This Celestron eyepiece holder/visual back threads on the 2" rear cell of all Celestron 5", 8", 9.25" and 11" Schmidt-Cassegrain telescopes to allo...

This exceptional Celestron 10mm Luminos ultra wide field 1.25" eyepiece uses seven optical elements for optimized performance across a very wide an...

This medium focal length 12mm Celestron X-Cel LX Series six-element eyepiece is usable for high quality medium to medium high magnification observi...

This exceptional Celestron 15mm Luminos 1.25" eyepiece uses seven optical elements for optimized performance across a very wide and flat 82° field ...

This medium green 22mm clear aperture 1.25" eyepiece filter reduces irradiation, glare, and excess image brightness in lunar observing. It also imp...

This Celestron X-Cel LX 18mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. This medium foca...

This very short focal length Celestron X-Cel LX 2.3mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field ...

This Celestron X-Cel LX 25mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. It is a good med...

This 1.25" 2x achromatic Barlow lens can be used visually, but the eyepiece holder portion also has integral T-threads so it can be used as a T-ada...

This is a good quality 1.25" 2x two-element fully multicoated Barlow. Its relatively short 3" length allows use in star diagonals. A thumbscrew hol...

This 45-degree viewing angle image erecting diagonal is designed to use 1.25" eyepieces in catadioptric scopes with a 1.25" visual back or in refra...

This Celestron X-Cel LX 5mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. It gives you good...

This sharp 7mm Celestron Luminos eyepiece has a wide and flat 82° field of view for "picture window" views, even at very high powers . This excepti...

This short focal length 7mm Celestron X-Cel LX Series six-element eyepiece is an economical choice for high quality/high magnification observing an...

This fully multicoated Celestron 8-24mm zoom eyepiece gives you a virtually infinite number of magnifications in a single very reasonably-priced ey...