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Old 16-07-2015, 08:39 AM
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Allan_L (Allan)
Member > 10year club

Allan_L is offline
 
Join Date: Mar 2008
Location: Central Coast NSW
Posts: 3,339
Hi Ben,
With all due respect to Don, this is another take on the same subject that I also find useful.

http://astro-baby.com/collimation/as...on%20guide.htm

Sometimes hearing the same thing presented slightly differently helps to clarify it.
Hope this helps.
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