@cfosterstars , do you have an updated or any Ha-L-RGB workflow Docx ? just getting started on the way of imaging.
Otherwise a good youtube Ha _ LRGB combination. i made a video but its not that accurate , im afraid.
This is for my personal imaging...
Are you subscribed to Astrodude on Youtube?
I have a section on blending Ha data into LRGB data. In my opinion, it is the hardest thing to do in the processing. Others state it is easy but this is not my experience. I recently had much better success with it for galaxies than I have had in the past and am in the middle of a reprocess of a 48 hour data set on M101. I will do an update at that point. Basically, for me and that is what I have found from my own experience, is that you need a good mask for the areas that you want to enhance with the Ha in the emission regions. If you do a straight blend with the NbLRGBCombination process, you get way too much reddening of the image. I take the output of the NBLRGBCombinaiton, apply the Ha mask to the RGB, and then use the BLEND script or even pixel math to mix the two images. This prevents the NBLRGBCombo image from screwing up the over all color tone. The trick is to get an Ha mask that only has the Emission regions and excludes the stars if possible. I take a star mask that I use for Deconvolution and subtract it from the Ha mask to remove most of the stars. This works since its a mask. The blended combination in this manner really can enhance the Ha regions and not cause a reddening of the background or screw up the star color. I have a hard enough time with star artifacts as it is with the added pain from Ha blending. The section in my latest version is from when I was still experimenting and every image was basically a unreproducible track in phase space!!!. Even when I tried to do it the same way with the same data, it would come out completely different. Now, The method describe above has worked on several data sets and I am going back to old data - M101 for example - to see if I can improve on what I did previously. I know that this is a bit scetchy, but I have not had time to really do a good job on writing it down.
By the way, I have not found - even with looking extensively - a good and solid video for Ha blending that was easy to follow. There was one for this from Richard Block I think, where he did something like this with M31, but Its not quite what I do. Its the only one out there that I think is on the right track. I keep hoping that Adam Block will do a video on his subscription on how he does this. Its been requested several time, but he has a long list of requests.
Let me know if this make any sense to you.
Edited by cfosterstars, 20 May 2019 - 04:38 PM.