I'm using pixinsight and I'm trying my first narrow band processing but cant get them to align properly using pixel math. If I select grey scale the images align but not if I choose colour.
I've been following this tute on the Pixinsight forum
http://pixinsight.com/forum/index.php?topic=2513.0
Any pointers on to to achieve this.
here are some links to the raw data incase its my data that the issue. There is 5hrs each for Ha SII and OII. The raw data has been calibrated with flats, darks and bias frames.
Registered files here
https://www.dropbox.com/s/cw435iu5ij...-BINNING_1.fit
https://www.dropbox.com/s/8l345s4a5g...-BINNING_1.fit
https://www.dropbox.com/s/9hivvm94uf...-BINNING_1.fit
Thanks
Sandy