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Just beginning and you're already using CCDAP...ay caramba!
A great start indeed.
Pixel math is your friend. Once you've got your masters created. Use Pixel Math in MaximDL (or tool of your choice) to add Ha data to your red filtered data. I usually work with 80% to 100% Ha to R blend. With your Ha+R master complete. Do a Ha+R,G,B combine. This will get you a base [HA+R]GB to work with. You can then perform luminance layering in photoshop of both Ha and Luminance data bring in the detail. Make use of the vibrance mode in photoshop, its usually more effect than saturate but you'll need to experiment to see what works with the data set. You may only be able to add 50% of the Ha data to the base RGB. Flatten and saturate, then layer the luminance data again but at a higher percentage. Keep your stars looking flat during the stretch process. Flat in that they don't saturate or reach the white (255,255,255) values. If this happens you'll have a hard time bring in the colour in the next step.
To get your stars back, do a G2V balanced base RGB combine. Stretch slightly (with DDP is perfect as it manages stellar profiles exceptionally well). Bring the layer into photoshop, place at the top of the layer stack as lighten or screen mode. Screen mode can be rather abrupt so you may need to mask the effect to ensure it doesn't alter other parts of the image. A mask is easily achieved with the colour range selection tool and tuning the fuzziness. If you want to make the stars pop, duplicate the mode doubles the effect. This can be effective if you layer a softlight mode over screen mode. softlight is a darkening function thus gets colours back if not already heavily saturated. Again, you may need to use masks to target areas of interest.
The above is just a starting point. Many ways to handle Ha data in RGB.
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