Celestron has paired its vaunted 9.25" Schmidt-Cassegrain optics with the Advanced series computerized GoTo mount and NexStar hand controller, producing a telescope that will take you as far as you want to go in the hobby of amateur astronomy.

Equipped with high-speed motors and hand control, the Celestron C9.25 S-GT XLT Schmidt Cassegrain Telescope's NexStar computerized control system automatically slews the scope to any of 40,000+ celestial objects in the database, quickly and accurately. The heavy-duty German equatorial mount has ultra-sturdy 2" stainless steel legs and dual-axis motors that slew at a 3-degrees-per-second clip. It also has an autoguider port for astrophotography.

This telescope features the revolutionary StarBright XLT enhanced optical coatings. The 9.25" optical system was designed specifically for visual infinity focus when using 2" telescope eyepieces and has an optimized baffle system to benefit astrophotography by minimizing vignetting at the edge of the field of view. Its longer primary focal length and lower-magnification secondary mirror contribute to a flatter field of view at the focal plane and help to further reduce optical aberrations.

Two-year limited warranty.

Proven NexStar Computer Control Technology

• RS-232 communication port on hand control to control the telescope via a personal computer
• Autoguider port for long exposure astrophotography
• 40,000+ object database with 400 user-definable objects and expanded information on over 200 objects
• Custom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable star; solar systems; objects and asterisms
• Double-line, 16-character LCD hand controller with 19 fiber optic backlit LED buttons
• DC Servo motors with encoders on both axes
• The CG-5 GT computerized mount and tripod

The StarBright XLT System — What Makes It Different Makes It Better
Celestron is proud to introduce a revolutionary coating system that outperforms any other coating in the commercial telescope market. All Celestron Schmidt-Cassegrain telescopes sold by Orion include this premium-quality optical coating.

There are three major components that make up Celestron's StarBright XLT high transmission optical system design:

1. Unique enhanced multi-layer mirror coatings
The mirror coatings are made from precise layers of Aluminum (Al), SiO₂ (quartz), TiO₂ (Titanium Dioxide), and Si0₂. Reflectivity is fairly flat across the spectrum, optimizing it for both CCD imaging and visual use.

2. Multi-layer anti-reflective coatings
Made from precise layers of MgF₂ (Magnesium Fluoride), and HfO₂ (Hafnium Dioxide). A rare element costing nearly $2,000 per kilogram, Hafnium gives us a wider band pass than Titanium, which is used in competing coatings.

3. High Transmission Water White glass
Celestron Schmidt-Cassegrain optical systems with StarBright XLT coatings use Water White glass instead of Soda Lime glass for the corrector lens. Water White glass transmits about 90.5% without anti-reflective coatings. That is 3.5% better transmission than uncoated Soda Lime glass. When Water White glass is used in conjunction with StarBright XLT's anti-reflective coatings, the average transmission reaches 97.4% — an 8% improvement!

These three components of StarBright XLT coatings result in one of the finest coatings available. The peak transmission for the systems is 89% at 520 nm. The overall system transmission is 83.5% averaged over the spectrum from 400 to 750 nm.

Warranty Information
Orion products are covered by a limited, non-transferable warranty. Products sold through this website and our catalog that do not bear the Orion Brand name are serviced and supported exclusively by their manufacturers in accordance with terms and conditions packaged with the products. Orion's Limited Warranty does not apply to products that are not Orion-branded, even if packaged or sold with Orion products. Please contact the manufacturer directly for technical support and customer service.