A number of sins can be hidden in smaller scale images to detemine whether your guiding effort may be lacking in one department or another requires a larger image IMO.
A very good polar alignment helps, fixed focusing so the focuser doesn't shift during the imaging run. Flex of the main scope etc
I'm sure others can ad a heap of things that may affect the outcome. All in all based on the scale not a bad effort IMO
PS: buy an AC adapter for the camera.
Clear Skies
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