With the help of a surprising amount of Clear Skies, I could finally complete another project. This one really challenged me... I had some trouble with my focus and also guiding, which forced me to delve into the subject.
I now learned that I have an 8min period in my RA worm wheel which especially shows in 240subs during zenith exposures. But a little balancing and 180s subs cured those symptoms a little. I also lost two nights because I didn't properly consider the focuser backlash... and also didn't check the HFR after an autofocus *noob

The final result consist of 28 hours (7 nights) exposure. I tried a bunch of new processing techniques in order to get the best out of the APP & PS combo.
    * I used the complete 24.5h RGB to get the luminosity of the faint outer arms & also a noiseless background
    * I used the sharpest 12 hours to highlight the details in the galaxy
    * I added 3.5h of H-alpha in a slightly aggressive red
    * I learned that saturation on linear data (before stretch) is beneficial
    * I learned that sharpening on linear data provides significant better results compared to sharpening on stretched data -(see REVISION C)
    * I learned how to combine different stretch-strengths (and also that an exaggerated and smoothed stretch leads to an awesome contrast with a noise reduced background as side effect)  -(see REVISION D)
    * I learned how to combine different stretched, colored, saturated and sharpened images, to get the most out of the data
All in all I am satisfied with the project. Not only because I like how the pictured turned out, but because I learned a lot of things as well But the main credit goes to such a photogenic galaxy

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M63 is a 30 million ly distant 8.5 mag galaxy with up to 400 billion stars. It has a lot of well distributed HII regions. The resulting knobs explain it's nickname (and also make it a good candidate to use or expensive Ha filters during galaxy season ). One clearly sees more details more details in "left side" of the galaxies spiral structures. This makes me think that it's the closer side from the earth's point of view - and the other side might be obfuscated by the galaxies halo...
actually those are not my thoughts, but i read them a lot of times at @Gary Imm 's images ... nevertheless he is way better in describing those things, so check out his pictures if you want to read something about the actual galaxies.