I did this image using my TEC180 fluorite. Its often imaged with RCs and CDKs so the core was lacking a little in detail compared to other images on the net taken with larger scopes.
I took some narrowband data of this last night with the CDK. The first couple of hours was rubbish data and to my surprise when I checked the subs this morning the seeing improved remarkably at around 11pm. So I had some quite nice data.
I added this to the centre ejecta nebula to give it more detail so the image is not massively different but it now has decent detail in the centre nebula.
http://upload.pbase.com/gregbradley/...56022968/large
http://upload.pbase.com/gregbradley/...22968/original
Greg.