HaRGB Processing

[Mark de Regt]

Hi,

I've seen several tutorials for HaRGB processing in PI, including the NGRGBCombination script.

I have a whole lot of such data to process, and, before embarking on the perilous journey, I thought I'd ask what's the most effective way of doing it?

Thanks!

Mark

[ihowarth]

No help for Mark i'm afraid, but I'm facing a related "issue" working on L-Ha-RGB data for M1. 
Outside the core (synchrotron) region, Ha provides most of the flux (i guess a smiliar issue applies to the faint H-alpha outflow in M82).
If I add the Ha to RGB, then merge the HaRGB with L, I lose the outer filaments, because there's little "L" signal there.
If I add the Ha to the L, then merge with RGB, I lose the colour in the outer filaments (because there's little RGB there).
Any suggestions welcome!

[avastro]

Hi Mark
I found Vicent Peris Tutorial http://www.pixinsight.com/tutorials/narrowband/index.html a must to be read deeply before starting to process HaRGB images.
In my opinion it's difficult to propose a most effective way of processing HaRGB because each image is quite different and the technique should be adapted to the specific image to get the best rendition.
Best
Antoine
http://www.astrosurf.com/avastro/

[jkmorse]

I agree that's a great tutorial and a must read. 

One thing that may help in your case, ihowarth, is to try both of your ideas.  When I shoot narrowband, I often use the Ha image as my base Lum as well since it always has the strongest signal, but it is in the color element as well.  You should do the same in your case, and apply both methods you suggest, by adding Ha to both the R and to the L.  That way you get the color boost in your RGB AND the detail boost in your Lum.

Love to here how that works out if you haven't tried it previously.

Best,

Jim