DumbellNebula

Sometimes my ZWO ASI 533MC processes well with de-Bayering at RGGB settings, but occasionally you have to use GBRG. I have no idea why. Anyway this M27 image is 66 x 1 minute subs with my C9.25 SLT with Celestron 0.63x reducer and the 533MC camera. My mount was the SkyWatcher EQ6-R Pro. This is processed with the GBRG Bayer matrix being used in Astropixel Processor. The result with the RGGB setting was very bad. This was my first polar alignment with Polemaster. My guidescope was 50mm F4.8 and guide camera was ZWO ASI 120MM mini cam. Imaging used APT, PHD2, EQMOD and Stellarium.