Dome Parts GmbH
Keltenstr. 2
86517 Wehringen,
Germany
phone: +49 8234 90 59 100
web: https://www.astrogfk.com/
e-mail: mail@astrogfk.com
... the observatory people
Roof assembly
ATTENTION
:
The roof roller system runs very smooth and easy. Do NOT forget to use
clamps to keep the roof section in place while you work at it!
Attach all rafters pairs to the two roller beams. Use the supplied 8x100 Spax The positions ar
indicated on the roller beam.
The rafters pairs with the front gable is for the entrance area, the pair with the smaller
triangular plates on the rafter heads should be at the backside of the observatory.
All positions are marked for this purpose. Note the outer cover of both the guide beams are pre-
installed in our factory to safe you time.
Remove the clamps to allow the roof to properly settle on the rails. Then lock it back with the
clamps so you can proceed with the roof construction
Make sure
to use the ENTIRE contact surface when you attach the rafter pairs to the roller
beam. (See detail). The notches in the rafter pairs must fit perfectly around the edges of the
roller beam! Check this! Then using the supplied screw screw everything tightly together.
After successfully installing the rafters pairs, remove all clamps that secured the roller beams
and the roof during the assembly work. This is as good a time as any, to check if the roof
moves smoothly. If it goes well, secure the roof again with at least two clamps.
Roof and roller beams
Place both trolleys / sleepers with their rollers on the guide rails. Use at least two large clamps
to hold them in place after aligning them perpendicular to the rails. This is important.
Positioning tip:
a piece of wood approx. 15mm fits outside between the guide bar and the
trolley. And the beginning of the trolley should be at the front gable.
The guide roller bar with the rack must be on the left (for Medium and Big, for Mini the rack is
on the right). Position both guide beams so that the steel cables will later point away from the
observatory. You can now start assembling and installing the rafters on the guide rollers and
attach all the connecting plates and all other components as shown in the drawing.
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