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Old 06-04-2014, 12:19 PM
glend (Glen)
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glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 7,121
I owned a GSO 12" solid tube dob and it was a very nice scope. I have looked through other 12" dobs but can't say one brand is much better than another but GSO mirrors are claimed to be good, as with any production newt some are maybe alttle better than others of the same brand. One thing in the GSO favour is the excellent altitude bearing which are also moveable balance points and have locking ability. These are roller bearings and not the teflon bearings used on some scopes. The GSO also uses needle roller bearings on the azimuth between two metal plates which is very smooth . I upgraded to the 16" GSO.
If your concerned about price, Andrews Communications is always cheaper for GSO products.

I am sure the mirror nazis will lob in shortly to rubbish production mirrors and suggest you need a mirror that costs more than most scopes but you have to start somewhere. Hwve a look at the limiting magnitude and resolving power of the scopes you are considering.
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