Quote:
Originally Posted by Dave882
Hi Kanga
Might be helpful to know what gear you used for this shot?
Seems to my eye to be some star comets pointing inwards in all 4 corners which can be quite common without a field flattener (especially if you are using a larger imaging sensor).
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Hi Dave and Craig,
I used an 80ed f7 with qhy163M (4/3 sensor) and filter wheel - I used Ha,Oiii and G filters (the green filter was a visual one) and a 1X hercules field flattener ( I do not know what the back spacing is meant to be for this flattener).
Cheers Kanga