Unmatched Portability & Premium Optical Performance
The Celestron C6 Optical Tube Assembly (CG-5 Dovetail) strikes the perfect balance between aperture size, ease of handling, and affordability. Featuring a 152.4 mm (6 in) aperture and a 1500 mm (59 in) focal length with an f/10 focal ratio, this Schmidt-Cassegrain telescope yields 40% more light-gathering capacity than a standard 127 mm (5 in) optical tube.
Patented StarBright XLT Optical Coatings
Every optical surface is treated with Celestron's proprietary StarBright XLT coatings, engineered to dramatically boost light transmission up to 97.4% across the visual spectrum:
- High-Transmission Water White Glass Corrector: Replaces traditional soda-lime glass to maximize light input prior to anti-reflection coating.
- Multi-Layer Anti-Reflective Coatings: Layers of MgF2 and Hafnium Dioxide (HfO2) ensure a broader bandpass and razor-sharp contrast.
- Enhanced Multi-Layer Mirror Coatings: Vacuum-deposited layers of aluminum, SiO2 (quartz), and TiO2 (titanium dioxide) deliver flat, high reflectivity for deep-sky imaging and visual observing.
StarBright XLT
97.4% Total Light Transmission for Brighter Images & Shorter Astrophotography Exposures.
Versatile CG-5 Dovetail Mounting
Equipped with a standard CG-5 / Vixen-style dovetail bar, the C6 fits seamlessly onto a wide array of computerized alt-azimuth or equatorial mounts, as well as heavy-duty manual tripods.
Lightweight & Compact Chassis
Constructed from durable aluminum, the tube weighs only 4.54 kg (10 lbs) and measures just 406 mm (16 in) in length, making it ideal for field trips to dark sky sites.
Technical Specifications
| Optical Tube Assembly Specifications | |
|---|---|
| Optical Design | Schmidt-Cassegrain (SCT) |
| Aperture | 152.4 mm (6 in) |
| Focal Length | 1500 mm (59 in) |
| Focal Ratio | f/10 |
| Included Eyepiece 1 | 25 mm (0.98 in) – 60x Magnification |
| Finderscope | 6x30 Optical Finder |
| Star Diagonal | 31.75 mm (1.25 in) Star Diagonal |
| Optical Coatings | StarBright XLT Premium Coatings |
| Optical Tube Material | Aluminum |
| Highest Useful Magnification | 354x |
| Lowest Useful Magnification | 21x |
| Limiting Stellar Magnitude | 13.4 |
| Resolution (Rayleigh) | 0.93 arc seconds |
| Resolution (Dawes) | 0.77 arc seconds |
| Light Gathering Power | 459x compared to human eye |
| Secondary Mirror Obstruction | 56 mm (2.2 in) diameter (37% by diameter, 14% by area) |
| Optical Tube Dimensions | Length: 406 mm (16 in) | Diameter: 180.8 mm (7.12 in) |
| Optical Tube Weight | 4.54 kg (10 lbs) |
| Dovetail Mounting Bar | CG-5 / Vixen Style Dovetail Bar |
Frequently Asked Questions & Safety Warnings
| Brand | Celestron |