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Old 22-12-2008, 09:22 PM
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Terry B
Country living & viewing

Terry B is offline
 
Join Date: Mar 2006
Location: Armidale
Posts: 2,781
Before I setup my permanent observatory I always used the polar scope but them aligned the main scope so it aimed south and then centered the SCP asterism in the eye piece of the scope. I then imaged (admittedly with guiding.) I did the same thing when I set up my observatory but then drift aligned. It was reasonably good anyway. Depends how much time you have and your ability to guide. If you are way out with the aiming of your scope then you will get field rotation despite guideing so the accuracy of the polar scope has to be reasonable.
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