The last two weeks we had a surprisingly large amount of clear skies in The Netherlands. I decided to go narrowband all the way on the Rosette nebula and captured data though Baader Highspeed Ha, OIII and SII filters with an ZWO ASI294MM Pro and Takahashi Epsilon-180ED. Total integration time is 14.5 hours: 18x 600s SII, 46x 600s Ha, 23x 600s OIII.
Processing a multi-colour narrowband image is quite different from a regular RGB/one shot colour image. My mind wants to make a natural looking image, but that's nonsense when your actually creating a false colour image. Pure SHO colour mapping didn't give satisfying results, so I ended up mixing the colours over the three channels which resulted in this pastel-shaded Rosette. Ha only was used for luminance.