Hi Keith,
congrats with your guiding, looks as though it's working well.
As Peter pointed out, your focus is off though. Your small stars in the cropped version haven't resolved to solid points of light.
I use to wait till my optics were well cool and spend at least a further half an hour checking focus in a binned mode to get my FWHM's to the lowest possible number then eye ball a full test image, magnifying to see if things were good.
All these little things will become second nature.
It's all fun!
Rich
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