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Hi Matt, you can get these old mounts polar aligned pretty well but I think you will find the accuracy of the drive mechanism the limiting factor as far as astrophotography goes.
I have a cave optical mount of similar design and vintage that I have used for imaging, this has an add on drive corrector to manually slow down or speed up the motor to adjust for the drives inaccuracies.
With careful monitoring I have been able to capture 30sec exposures at 1200mm, good fun with an old scope but a bit of work to get there. Of course back in the days of 35mm film, prime focus imaging was a near impossibility with these scopes, needing hour long subs to capture anything.
Nice to see a classic old scope seeing star light.
Cheers Rick
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