I added sulphur to this wide field in Auriga and mapped it to Hubble colors.
This is 17 hours of exposure time. All 20 minute images
Albert
https://www.flickr.com/photos/49526053@N04/24731173596/in/dateposted-public/ ;
<https://www.flickr.com/photos/49526053@N04/24731173596/in/dateposted-public/>
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