Star removal

[Gordb]

I am just venturing into narrow bandRGB imagin. I would like to combine Ha with my DSLR RGB data and would use the NBRGB function.  From what I've read, it seems that it would be best to use a starless Ha image for the combination.  I'm wondering if there is a simple method in PI to accomplish this?  A search of this topic shows that there was a brief conversation about this a couple of years ago but I haven't been able to find anything more recent.  I'm sure I must just be missing something.  Any help or direction would be much appreciated.

Many thanks,

Gord

[pfile]

david ault has a tutorial regarding this issue:

http://trappedphotons.com/blog/?p=731

however i'm not sure it's absolutely necessary to remove the stars to do narrowband processing, it's just one technique...

rob

[Gordb]

Thanks Rob.  Any other tips or suggestions are most welcome!  When looking at using NBRGB to do the combination, could I ask where you would use it in your workflow?

[pfile]

for narrowband i'm using RickS's ColorMask script, following the steps outlined here:

http://pixinsight.com/forum/index.php?topic=7751.0

some results:





rob