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Old 18-08-2019, 01:22 PM
glend (Glen)
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glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 7,051
Chris if you bought it new then the primary should be pretty good, as they are setup in the factory. The problem comes with used scopes where people who Don't know any better try to collimate them like newts. Once that primary has been moved you could be in a world of trouble. Unfortunately that is when folks tend to sell them on to someone else.

Imho, Just follow the standard GSO RC approach, centre your focuser to the secondary centre spot first. Get the optional collimation ring from Andrews if you don't have one, it allows you to adjust the aim of your standard laser inserted into the focuser. Then concentrate on the TAK collimation scope view to get the secondary correct to show equidistant ring alignment.
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