The Helix nebula

I captured the Helix nebula over the last few nights. It was still rather low but much better than at home!

20x5min subs for Ha,Oiii and Sii, though Pixinsight decided it didn't like 3 of the Ha subs. I've done a quick process and mapped the channels to HSO and SHO using the SetiAstro palette chooser. I did have an issue with a tree which was slightly in the way of my telescope, I had 2 parallel lighter lines on the background which I managed to remove using clone stamp and curves.

I've cropped the images to emphasise the Helix nebula. My Player One Poseidon has a massive field of view.

The Helix nebula

HSO

SHO

Anne Startup