Added a spring
at the end of the shutter close cable.
Added a dome sag u-brace... shown with the shutter
partially closed. The brace blocks the fully
opened slit quite a bit. This is not a problem
because Automadome is configured to rotate the dome
around 180 degrees when the scope points higher than
about 70 degrees.
The brace is assembled with 3/8 inch water pipe and
various fittings from the local hardware store. The
ends were stepped up to 1/2 inch pipe to fit over
the nuts on the 5/16 inch threaded rod. The brace
has a 7-1/4 inch offset for the scope's line of
Close up of the brace mounting stud, made with a 3
inch threaded rod.