Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  NGC 869  ·  NGC 884  ·  NGC 957  ·  The star 7Per  ·  The star 8Per  ·  chi Persei Cluster  ·  h Persei Cluster
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Double cluster with Ha relic background., Olly Penrice
Double cluster with Ha relic background.
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Double cluster with Ha relic background.

Getting plate-solving status, please wait...
Double cluster with Ha relic background., Olly Penrice
Double cluster with Ha relic background.
Powered byPixInsight

Double cluster with Ha relic background.

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This is an older image re-posted for the first time since it was lost in the crash. I simply followed Fabian Neyer's good idea of looking for the relic radiation (if that's what it is) from the clusters' formation. I think that you can, if you try, find some evidence for a Rosette-like bubble blown by radiation pressure from the hot stars but I wouldn't call it conclusive...

21 hours all in, LRGB and Ha, using both Tak FSQ106 and TEC 140 data from Les Granges, as usual, in SE France.

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Double cluster with Ha relic background., Olly Penrice