Lacerta 300/1200 photo Newton

This telescope is the modified, improved version of the original SkyWatcher Photo-Newtonian.

Features:

- Carbon tube is sandwich with different layers, correctly aligned, made in Germany! More rigid than SW carbon, and to use the original tube rings. They has made the middle portion in original size, but both ends are thicker. So not uniform the same thickness.

- Inside there is black velvet instead SW baffles of same size than primary. Baffles are not good in Newtonians, because warm air from the primary mirror had to pass all baffles and so makes a multiple "air lens".

- secondary mirror rim also blackened

- focuser: Now the original SW crayford, bur improved by a second bearing unit, 8 ball bearings total. That means it is getting much more rigid, can lift and hold more weight. Focuser tube shortened, and also velvet inside. That provides the corrector can slip tightly inside, but cannot tilt. It is same like corrector fixed built in, but still rotable camera/corrector unit.

Specifications 12" F/4:

Weight 16,3kg OTA alone
Weight with fix mounted rail 17,3, kg
Weight with tuberings and rail 20,7 kg
Overall length: 1110mm
Tube diameter outside: 338mm
Tube diameter outside: 358mm
Tube thickness: 10mm Carbon fibre
Focus on tube: 141mm
Secondary mirror diameter: 99mm
Focuser over HS: 880mm
Mirror Material: Pyrex!

To keep the weight down, we recommend to mount the Losmady dovetail permanently to the tube.