Erhard  Hännsgens 1.07 Meter  f/4.5 Dobson

Total weight of scope: 350 kg (770lb) 

The back side with 4 fans and the 3 collimation bolts. Erhard preferred a closed mirror cell design to minimize dust formation on the mirror

The front side with the secondary removed

The 42.1" primary is just 56 mm (2.2") thick and weights 98 kg (216 lb)

The 8" secondary mirror

Transport in a trailer. All components fit nicely and are secured with belts.

More Pictures from ITV 2003
More Pictures from setup and break down procedure  ITV 2003