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Old 21-10-2009, 10:03 AM
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Paddy (Patrick)
Canis Minor

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Join Date: Jun 2007
Location: Strangways, Vic
Posts: 2,214
If it's not too far out, you could adjust all the collimation screws by an equal amount to move the position of the primary. I had the same experience when I first put my WO 28mm UWAN in my 12" dob.
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