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.
![](https://i0.wp.com/www.drogenberg.be/wp-content/uploads/2019/09/M27-244x120s-Ha-23x120s-RGB-120F5-Esprit-ASI183MM-Meldert-SQM20-September2019.jpg?resize=525%2C342&ssl=1)
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