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Second Hand ETX-70AT Fogged Mirror

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#1 olyscott8



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Posted 03 May 2013 - 01:38 PM


Looking to buy a second hand ETX-70AT but they say It's in good condition but only usable with the 45 degree prism because the right angle mount cannot be used as the mirror is fogged.

Is this easy or cheap to repair?


#2 MistrBadgr


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Posted 03 May 2013 - 02:38 PM

The easiest thing to is just buy another 90 degree diagonal. If it takes a regular one, you are talking anywhere from $10 to $50, depending on quality.

I am not familiar with the arrangement on this particular scope. Does someone know if this scope takes a regular diagonal or is it one that has a special mount ring that screws on the back of the OTA, like a SCT does?

Bill Steen
Bill Steen, Sky Hunters' Haven Observatory, Broken Arrow, Oklahoma

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