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Discussing this today at Bintel. Their view was "if your light pollution is bad - go narrowband - like Fred Van der Haven does, but match it to a camera with Ha sensitivity and the correct pixel size for your seeing (binning if you have to). In narrow band you can image for as long as you like on a mono camera".
So basically a DSLR that isn't modified to see Ha is a limiting factor in light polluted surburbs. Even with a Hutech light pollution filter - I can barely image the Helix nebulae on the darkest of nights. Too I can't get any real red on the Tarantula - shooting on a Canon DSLR.
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