This picture shows the well-know classic object of the Dumbell nebula, or M27. I could image this object for more then 10 hours on several clear nights lately, with 8 hours of H-Alpha narrowband (7nm) and 2 hours of RGB.
M27 in H-Alpha light
SH2-129 in Cepheus
This is an object that typically gets pictured with narrowband filters using a CCD. It ‘s not very often imaged with DSLR.
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