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Thanks Scott,
I thought of that as a possibility too.
I took 2 images last night with 45 sec exposures. I haven't processed them yet - but they look okay. I increased the noise level on my autoguider to reduce the possibility of fainter stars being picked up - it also made the guide star smaller.
For about 30 minutes I had the dec guiding off - no double stars and almost 0 drift. I then turned it on - I got one image with double stars - probably the first one when the dec started to correct.
The next images (subs) I had the dec guiding on - there were no double stars. I will keep monitoring it.
One good thing - apart from the guider not fully compensating for PE, I had virtually 0 drift on both images. I usually have issues with flexure - I tighten everything a bit more now.
Tony.
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