The Celestron C9.25 can be mounted on a multitude of computerized telescope mounts thanks to its CGEM-style dovetail bar. This iconic optical tube provides the best balance of portability, handling ease, light gathering ability and price ever offered to the amateur astronomer. The Celestron C9.25 is an unusual size with its 9.25” aperture and 2350mm focal length, but many consider it to be the Goldilocks of optical tubes—not too big, not too small. This rugged aluminum optical tube is only 22 inches long and weighs just 20 pounds, making it easy to transport and set up. You may also occasionally see older ones with Orion or Sky-Watcher livery, but they are otherwise identical and made by Celestron. The C9.25 XLT is sold as a package with the Celestron Advanced VX and CGEM II mounts, and we recommend either as a mounting choice for this telescope. The Celestron C9.25 can be mounted on a multitude of computerized telescope mounts thanks to its CGEM-style dovetail bar. This iconic optical tube provides the best balance of portability, handling ease, light gathering ability and price ever offered to the amateur astronomer. Outfitted with a large aperture, long effective focal length, and their proprietary StarBright XLT optical coatings, the Celestron C9 1/4-A XLT 9.25" f/10 Schmidt-Cassegrain Telescope provides power and portability. While demonstrating advanced level performance, the Celestron C9.25 Schmidt-Cassegrain Telescope is optimal for astronomers of every experience level. The wide aperture and long focal length can be utilized for both astrophotography and visual astronomy—delivering bright views and stunning images. What are the key features of the Celestron C 9.25? The Celestron C 9.25 telescope is known for its 9.25-inch aperture which provides excellent light-gathering capabilities, making it ideal for detailed observations of planets and deep-sky objects.