Precise focuser for exact adjustment
The 2" Rack & Pinion eyepiece extension with 50 mm of adjustment works without backlash and securely supports heavy equipment. The fine mechanics of the rack and pinion allow the focus to be set with pinpoint accuracy. The integrated M56 connection also ensures a stable, precisely centered camera mounting without adapter play.
Stable focus even with temperature fluctuations
The carbon fiber tube minimizes longitudinal expansion, even with significant temperature changes during the night.  This keeps the focus constant, and you don't have to readjust.  Especially with long exposures or automated shooting sequences, this is a crucial advantage for consistently sharp images.   
Main mirror with highly reflective coating
Every percentage counts!  With a reflectivity of 94%, the light yield is significantly higher than that of normal telescope mirrors.  This means: Even a few percent more light makes a decisive difference in long exposures and can determine the imaging of faint deep-sky objects.
CNC technology for maximum rigidity (203 and 154 only)
Tube clamps and prism rail are completely CNC-machined. The result: a stable hold, even with longer telescope focal lengths and heavy accessory weight. This keeps your image section exactly in place. A real plus for long exposures and mosaic images.
Compact design, big impact
Despite its robust construction, the Pro Carbon Astrograph remains compact and portable.  The short design relieves the mount, improves balance, and saves space during transport. Whether in mobile use or as a permanently installed system: This telescope integrates flexibly into your equipment.