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This is interesting. I finally had a chance to go out and try out drift alignment on my EQ6 + Astromeccanica motors + 8" Newtonian. After many frustrating moments, I think I finally achieved an ok result. I was able to achieve no DEC drift for about 8mins using my 12.5mm reticle. There was still drift in RA but I reduced this by adjusting the sidereal rate. Nevertheless, some RA drift remains but I don't think I can eliminate it.
Overall, I was able to keep a star in the box of my recticle for at least 5mins. Is this acceptable? When I finally start prime focus imaging, I won't have the ability to guide. I assume the aim will be able to get subs in the order of a few minutes. I was interested to know what sort tolerance I would have with this polar alignment.
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