Hi Dave
I dont think they would be too tricky to make (not for me though as hopeless). They just need to wrap around the scope, and can be secured with velcro or loop onto the knobs on scope.
You can check out mine when we catch up next.
I have mine on all the time, but some dont use them, or only on public nights.
You can buy them
http://www.astrozap.com/scripts/prodList.asp
There must be places in Aus too, but couldnt find on a quick search.
