The Celestron C9.25" Optical Tube Assembly (OTA) is designed for astrophotographers who want professional level performance in a flexible and camera friendly setup. With its impressive light gathering ability and clean optical design, this tube delivers sharp and bright results whether you are imaging nebulae, star clusters or planets with subtle surface details.
 
A major advantage of the C9.25" OTA is its support for Fastar technology. Fastar lets you remove the secondary mirror and replace it with a compatible camera system to achieve extremely fast focal ratios. This dramatically reduces exposure times and allows you to capture deep sky objects in minutes rather than hours. Fastar is especially powerful for wide field nebula imaging, electronic assisted astronomy and quick deep sky data collection from light polluted areas.
 
The optical tube also uses StarBright XLT coatings, which are engineered to maximise light transmission across the entire optical path. These coatings improve the brightness of stars, enhance contrast in nebulae and reduce internal reflections. For astrophotography this means cleaner frames, better colour accuracy and more defined fine structure in faint objects. XLT coatings are one of the reasons the C9.25" produces such crisp and high resolution data.
 
Compatible with a wide range of equatorial mounts, guiders and cameras, the C9.25" OTA is a trusted platform for both beginners moving into serious astrophotography and experienced imagers upgrading their system. It is lightweight for its aperture, easy to balance and designed to deliver consistent results night after night.
 
Key Features
 
• StarBright XLT coatings for high light transmission, excellent contrast and reduced reflections
• Fastar compatible design for ultra fast imaging with short exposure times
• Strong light gathering for faint nebulae, clusters and planetary detail
• High quality optics ideal for deep sky and planetary astrophotography
• Works smoothly with DSLR and dedicated astro cameras
• Reliable and flexible tube assembly for advanced imaging setups