Many thanks guys, much appreciated, Craig yes I do use a Hutech 72mm Light Pollution Filter It is screwed into the back of the Tak, just in front of the rear element, works very well.
Might give that a try Matty, can't hurt, but seeing that the object is off center in relations to the two nights of imaging, I would just wonder how that would work, but I will give it a shot.
Leon
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