Now Ihave a complete system I'm very happy with.
Olympus OM-D on Takahashi FS-60C via Tak wide mount adapter, standard extension tube and camera angle adjuster. Tak finder bracket modified to solar finder. 5mm foam core sun shield. Total weight - 2.1kg.
Vixen Polarie on tripod via Losmandy 2-D camera bracket.
Baader AstroSolar film cell made from Feather Touch focuser adapter with optional 72mm orange filter.
Works a treat. Cairns, here we come.