Celestron C6 SC XLT - 150/1500 mm Schmidt-Cassegrain OTA, orange

Celestron C6 SC XLT - 150/1500 mm Schmidt-Cassegrain OTA, orange

The C6 gathers ca. 40% more light than a 5" (125 mm) refractor, but is significantly more compact. It is ideal for both the beginner and the advanced amateur who pay attention on good optical performance and a transportable system.

The optical design:

The C6 by Celestron is a powerful but highly transportable Cassegrain system. With this 6" SC, Celestron has closed a relatively big gap between the smaller C5 and the C8. It accepts even 2" accessories with its SC thread - essential for wide field observation.

The multi-layer XLT anti-reflective coatings allow very high light transmission. Especially around the wave length around 500 nm, 10% more light are brought into the eyepiece. In this range, the human eye is very sensitive.

The internal focusing system:

The advantages of focusing by moving the main mirror are undisputed. The only disadvange, the primary mirror shifting, has been solved by Celestron. No disturbing shifting degrades the focus precision.

The advantages of the Celestron Schmidt-Cassegrain system:

Short design: 1500 mm focal length in an only 406 mm long OTA result in a compact but powerful system. That´s good for the mount and for the transportability.

No focusing problems: The focal point is moved by adjusting the main mirror´s position. This causes a very wide focus range allowing the connection of nearly any accessory parts for observation and photography.

Stiff tube: Even astrophotography with long integration times is possible. Due to the short tube design, no bending occurs.

Easy adaptations: The Schmidt-Cassegrain comes with a GP-style dovetail bar. So it can be easily attached to all standard mounts.

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin