I blended RGB data with NB data using a secret recipe. The method minimises the effect of the white NB stars on the colours of the RGB stars.
RGB data 15x5 min for each.
NB - NII 13x32 min, OIII 10x 32 min.
Large image here 16 MB
http://d1355990.i49.quadrahosting.co...6188_RGBNB.jpg
Bert
Astrograph is an Officina Stellare RH200 which has a focal length of 600mm and is F3. Clear aperture is 200mm.
FLI Atlas Focuser.
FLI ten position filter wheel CFW-3-10 with 50mm square filters.
Astrodon E series LRGB and HA, NII, SII and OIII 3nm NB filters. Also a continuum filter 5nm.
Camera is a FLI PL16803 which has a sensor size 36.8 X 36.8 mm.
The FoV of this system is 3.5 X 3.5 degrees.
Mount is a Software Bisque PMX.