With OIII added, Abell 31 looks something like this. The OIII is very faint. Even with 18x7' (126 minutes) of exposure through the Atik 16, stacked, the OIII was very dim. I stretched the data as much as I could. The Atik 16 is not nearly as sensitive to OIII as it is to Ha. Here is a version with less brightness:
2 comments:
Congratulations for your result on this nebulae ! I'll try to take picture of that nebulae during this week and I hope to have the same result like yours !
Pierre (Belgium)
Thanks, Pierre! I just saw your comment. Did you get it? I'd love to see other images of this rather difficult object.
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