Here's a thought... I'm imagining tricolour narrowband imaging with just 3nm Ha, N2 & S2 filters.
Maybe suited to Ha rich objects like the Lobster, Cats Paw etc. where there's stuff all O3 present.
As soon as funds permit I'm going to sell my 5nm's and get these 4x3nm filters to try this out.
Reckon there's a whole new fresh approach to be considered here.
Was going to keep this under wraps until I'd actually tried it, but the $2k US investment has held me back to date, so maybe someone else can try it out.
Also check out Bert's images (Avandonk).
He uses a 3nm N2 with great results
