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SCT lifespan
Hi All
I'm considering buying an older SCT, and was wondering what the lifespan is for these scopes. In particular, do the mirrors degrade substantially over the years? Should I stick to under a certain age?
I've had Dobs in the past , 1 of which degraded badly and ended up in the rubbish. SCT,s being somewhat sealed should last a fair while longer I imagine.
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