Celestron C8-A XLT Optical Tube Assembly

The Celestron C8-A Schmidt-Cassegrain Optical Tube Assembly (OTA) is the modern evolution of the Celestron C8. Engineered for today’s astronomers, this lightweight aluminum optical tube measures just 432mm and weighs only 5.9kg, making it an ideal choice for portable telescope setups, travel astronomy, and backyard observing. Despite its compact profile, the C8-A delivers outstanding optical performance with a 2032 mm focal length, f/10 focal ratio, and Fastar compatibility, enabling versatile use for both visual astronomy and advanced astrophotography.

Featuring Celestron’s StarBright XLT optical coatings, this telescope tube offers superior light transmission, enhanced contrast, and brighter deep-sky images. Astronomers can easily observe fine lunar detail, planetary features, faint galaxies, nebulae, and star clusters with exceptional clarity. StarBright XLT coatings outperform standard commercial coatings, reducing exposure times and increasing imaging efficiency for both beginners and experienced imagers.

The Celestron C8-A OTA includes a CGEM-style dovetail bar, providing broad compatibility across a wide range of computerised equatorial and alt-azimuth telescope mounts. This makes it a top choice for retailers seeking to offer a versatile, high-performance telescope OTA that excels in portability, light-gathering power, ease of use, and value.

With Fastar capability, users can remove the secondary mirror and install a third-party Fastar or HyperStar lens assembly (sold separately). This transforms the system into an ultra-fast f/2 imaging platform, reducing exposure times by up to 25× compared to f/10 imaging. Deep-sky astrophotographers can capture galaxies and nebulae in as little as 30 seconds, making the C8-A one of the most powerful and adaptable OTAs in the astronomy market.

Designed for wholesalers, retailers, and astronomy enthusiasts alike, the Celestron C8-A Schmidt-Cassegrain OTA remains one of the most iconic, reliable, and high-performance telescope tubes ever offered to the amateur astronomy community.