I’ve finally got around to combining the remaining data into a mosaic of this area. Using a different technique to merge the images in Pixinsight I’ve removed the visible join that was due to a light pollution gradient in the original.
Sh2-155 is a region of Ha emission overlaid with dust in our galaxy, some of it thick enough to block the more distant stars completely and appear black.
This is a total of 10 hours 20 minutes of 10 minute subframes.
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One reply on “Sharpless 2-155 and M52”
I always had my suspicions that the nebula laying along the bottom at the left wasn’t the bubble. it is NGC 7538 – the little one with ‘eyes’ in the middle. Still very nice – it made the exhibition this year. I have it down as 5 hours for each side. Your pixinsight processing works best on this sort of image – the background is full of stuff!