This is the result of combining the previous HA+O3 narrowband HDR image (150mm Achro) with a colour HDR image taken last night with the 100ED.
Exposures 30s,1,2,4,8,16 minute at 500 ISO. This potentially covers a dynamic range of 18 bits. That is why you can see the Trap and the faint outer dust and nebula at the same time.
They were combined in ImagesPlus by adding the corresponding colour channels.
Large image 1.3 MB
http://avandonkbl.bigblog.com.au/dat...1018073640.jpg
I think it is a rather pleasing result.
Bert