Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble nebula  ·  M 52  ·  NGC 7635  ·  NGC 7654  ·  PK112-00.1  ·  Sh2-162
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Bubble full field, urmymuse
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Bubble full field

Getting plate-solving status, please wait...
Bubble full field, urmymuse
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Bubble full field

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Thought I would post this which is the un cropped version of the Bubble that I posted a few days ago

I like it cause ...I like it. It has got M52 (?) in the lower left corner as well

Terrible coma on the stars round the edge ... I have been reading up on this, I am using a coma corrector but wonder if I need to upgrade or its my collimation that off (but I have tried really hard on collimation so hope not) . The scope I am using is F3.9 , apparently this means coma will be worse

Any info on this would be appreciated

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