Having swapped out the Master Computer and mucked around a bit with Sky 90(1) I had some clear sky last night to take some test shots to see what needs fine tuning.  This image is just 12 x 5-minute subs with the array.  I now know that I need to very slightly flatten the Sky 90(1) chip and I need to re-align Sky 90(2) and Sky 90(3) to Sky 90(1).  Then the Sky 90 array will be ready for the new season.  The Canon 200mm DSLR array is of course fine and needs no attention!!  I wish now that I had built the whole array out of Canon 200mm lenses – live and learn 🙂

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