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Old 25-06-2008, 03:41 PM
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Satchmo
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Join Date: Dec 2005
Location: Sydney
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Quote:
Originally Posted by Paddy View Post
The vendor says that the mirror was crafted in the US in 1992 and is optically superior to the current Chinese primaries (quoting 1/4 wave error for the current Meades vs 1/8 for the older model). Do people think that this would be true and would the difference be significant? .
I've refigured a handful of the older Meades 16" which which, as presented to me, were good for low power only. I'm not sure on what basis you could say that the USA ones were better than Chinese ones..no mass produced mirrors are rated on a measured wavelength pass/fail basis : I think its the average batch quality that is monitored, you can get some that are clearly better or worse than the mean. You get what you pay for in the sense that you don't get the same level of quality control with low cost optic.

I would recommend use the telescope before you buy it. Medium to high power ( depending on the seeing ) will tell you all you need to know.
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