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This is a stack of 12x5min 800asa DSLR exposures, just to try out first ever PHD and diy OA autoguiding with B/W CCTV 1024x camera chip. Using the 'string' drive telescope mount in the pictures. Superb example of coma at f3.8 on 16cm Newtonian scope. Now making new ultra low profile focuser for 2" GSO Coma Corrector! Seeing was bad on a very frosty night last Autumn. It wasn't even a particularly dark sky that night!

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