M27

This is my 3rd image using my setup. Shot directly at F10 with no Celestron corrector as I wanted to try. I also shot across 4 nights and wanted to learn how to combine multiple sessions using sirilic. It is easier than I thought but I still need to train on SIRIL. As my Celestron SC8 is not corrected, you can see some distortion/coma especially on the left side.

I am quite please with the result and I can see some progression but I still got a long way to go!

Astrobin link

In the slider below, you can see a five minutes exposure image and the final result after combining 51 images for a total integration time of 4 hours and 15 minutes.

Before After
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