I managed to collect 10x4 min each of HA, NII, OII and SII all at 3nm
This image is an attempt to assign NB to the 'correct' colours.
HA and NII to Red
OIII to Green
OIII, SII and a simulated Hbeta (30% of HA) to Blue
The SII is really 'red' but we need more blue to add some contrast. This would be suitable to blend with RGB data?
Here is the large image 6 MB
http://d1355990.i49.quadrahosting.co...04/NB_stew.jpg
A better version 7 MB
http://d1355990.i49.quadrahosting.co...NB_stew_02.jpg
Bert