Hi Peter,
It's not a cheap excercise. I bought the filter/blocking filter set from B&H Photo Video in the USA:
http://www.bhphotovideo.com/c/produc..._II_60_mm.html
which works out to about $2K AUD with postage. Unfortunately I then discovered that, while the site says there are adapter mounts ("New Product: Not Yet Available") they do not and will not exist for the ED80. Meade apparently have no intention of making these commercially. I had to have one especially machined, with some assistance from Merlin (Ken) on these forums. That cost an extra $185. Had I realised that at the time I probably would have just bought a Solarmax scope.