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Hi Peter,
heck, ask someone else who knows more than me, LOL.
From the recent mono camera I had (OK, getting slightly off topic but it is relevant) I found that most objects sprang to view with Ha, and to a slightly lesser extent with O3, and were less than appealing with S2. Mind you I shot that "Pencil Nebula" in the Vela SNR and it fair hummed with O3, more than Ha, go figure.
Can't hurt to try, just give it a go. Try Ha and possibly O3 first, then worry about S2 (or H Beta?).
Gary
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