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Abell 1656 cluster of galaxies


Bob Dobber

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Colour issue may be caused by either your bias or your darks , try stacking lights only  and see if effect still present 

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17 minutes ago, Bottletopburly said:

Colour issue may be caused by either your bias or your darks , try stacking lights only  and see if effect still present 

 

This is in mono, so my guess is that the lop sided diffraction spike on that star got some time on one side of the flip with one filter, then more time on the other side after the flip...

 

 

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It looks good to me, that's a lot of galaxies in one shot.  Just trying to get your head round the distances involved fries the brain.

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