Thanks
Barry, Terry and Brent
All good replies - thanks for the advice.
Using an equatorial platform (EP) with a dob mount does pose special problems for alignment compared to GEM, fork mounts etc. I thought about using PHD, Pro Tem etc but at the moment I am using a DSLR and believe you need a CCD to allow these programs to read pixel positions. I will look into this. However in the interim, I am going to give Brent's idea a run this weekend and see how I go. (Clouds willing)
I suppose I should find a star on the celestial equator rather than the zenith (-32 degrees) as it will be a right angle to the virtual axis of the EP or does it not matter?
Doug
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