I finally "finished" my narrowband capture of M1, the Crab Nebula in Taurus. 2.5 hours of Hydrogen alpha, 2 hours of Oxygen III, and 3.5 hours of Sulfur II.
Now the problem is what to do with them! Here are three combinations:
1) the "standard" Hubble palette with Sulfur as red, Hydrogen as green, and Oxygen as blue.Very interesting - that supernova sure flung a bit of mess around, elementally speaking!
2) a "true colour" narrowband, if that's not a contradiction in terms: OII blended as a greeny-blue; Hydrogen blended as lighter red and a bit of blue (assuming there's Ha and Hb in about the same places); and SII blended as a deeper red.
3) a greyscale luminance.
What I might end up doing is getting some normal RGB and using the narrrowband simply as a luminance channel.
...getting some RGB and using the NB data as Lum might work too.
