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Old 29-05-2012, 11:26 PM
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g__day (Matthew)
Tech Guru

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Join Date: Dec 2005
Location: Sydney
Posts: 2,902
Have you ever checked it focus or taken an image on it that shows what its mirror can do? As said above - its basically 90% dependant on the quality and state of the primary mirror.

If its a junk mirror is not worth much, if it has 1/15th of a wavelength diffraction precise grinding and in great condition its worth thousands. What condition is the mirror in? What's the history of the OTA?