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Old 17-11-2014, 01:52 PM
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5ash (Philip)
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5ash is offline
 
Join Date: Mar 2005
Location: Hunter valley. nsw
Posts: 1,111
Hi Tony ,
Collimation of a SCT is achieved by looking at an outer focus star in the centre of the field of view and adjusting the 3 secondary screws to get a symmetrical image. Look up the instructions on the web, only small adjustments are needed , if needed! Do not loosen any of the screws by more than half a turn.
Regards philip
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