Well there is doing a "Vanderhaven" (starless images) then there's doing a "Sidonio" (reprocessing) and NOW the newest practise thast's sure to take off in Aussie imaging is doing a "Davies"!
Grus Quintet:
http://www.pbase.com/strongmanmike20...18160/original
Fornax Cluster:
http://www.pbase.com/strongmanmike20...16584/original
Ahhh just like narrowband imaging it's great fun to do, try it
On ya Marcus simple idea that's, as you suggest, maybe not for the purists and one is not sure whether it is quite right.....but it actually looks quite good IMO
Mike