[johnnyt123 (John)]

Hi all...
this is an amateur question..but here it goes..

If you have already processed an HaLRGB image and it looks nice and you chose to take more luminance or Ha or even colour data at some point in the future, how do you go about adding that data into your already processed image?

do you have to start the process all form the beginning?? that is stacking the RAW .fits files with the new set of data and reprocess the entire image from scratch or is there a much simpler way of doing this?

Thanks for any help..

Johnny