Managed to get some colour data with the SN10 with the fridge fitted. Here it is added to some NB data. I can go deeper but this looks very promising.
!.7MB
http://members.optusnet.com.au/~fmlee/ngc2070C+NB.jpg
Canon 5DH. SN10 with Paracorr, Colour 10x(1m, 2m, 4m and 8m) at 800 ISO at -10.0C. NB 5x(2m, 4m and 8m) at 800 ISO at 15C ICNR. ETC.
Bert