NGC 7635 Bubble nebula and open cluster M52

As a secondary target, I imaged the Bubble Nebula – M52 open cluster duo. I obtained 7×5 min usable light frames with the N 150/750, Baader MPCC Mark III, Canon 1100D mod, HEQ5 at ISO 1600 (and sub zero temperatures, summer :P). The area in Cassiopeia is fairly rich – more and longer expos – but the equipment was about to fail due to the extreme weather and power issues. Maybe next time. To my surprise though, I could tame the raw frames to obtain this picture.

C 11, NGC 7635 [nebula in Cas] Bubble nebula, Buborék-köd ø15′ [wiki] [simbad] 750mm

M 52, NGC 7654 [open cluster in Cas] 6.9m ø16′ [wiki] [simbad] 750mm  (tovább…)