Here is a version with the NB assigned to their natural colours.
Red Operation : ADD
Number of Components : 2
File 1 : RZ_RGNII_.FIT
File 2 : RZ_RGSII_.FIT
Green Operation : ADD
Number of Components : 1
File 1 : RZ_RGOIII_.FIT
Blue Operation : ADD
Number of Components : 1
File 1 : RZ_RGOIII_2.FIT
Large image 8MB
http://d1355990.i49.quadrahosting.co...04/LC_NB_N.jpg
With RGB data to colour the stars it may be finished.
Bert