let`s "rope `n`roll"

Since my observatory is entirely run on solar energy I had to spare an electric opener. So I decided to create a

very simple opening mechanism for the shutter. the ropes for opening up and shutting down have 2 rollers on each side.

(locking mechanism of shutter system is released in this image.)

the top-rollers in place (top of the dome) guiding the rope. most stable and reliable

thin cable with hook to hold the rope aside while observing (see above)

the shutter in locked position

the shutter - locker

the handle on the front shutter and a heavy eyelet-screw (settled down in the building) with rope and a simple karabiner snap link

both ropes must be attached to the front shutter element which is parked in the "open" position in this image.

this is best achieved by making use of an eyelet-screw-system which forces the 2 rope-ends towards the shutter.

making sure that the sliding surface is not compromised is vital!