Hi folks
well, having acquired data using 7 of the 8 filters in my CFW, it seemed rather obvious that I should go off and get a further 5 hours of data and create a NB version of this field (SHO palette).
So, this is SII, Ha, OIII consisting of 5 hours each. No RGB stars required. Again, much like the Ha emission, the NB representation is so much more interesting than the somewhat bland red that is typical of an emission nebula.
http://www.martinpughastrophotograph...NGC3324_NB.jpg
thanks for looking
Martin