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Interesting post Alex. I've often wondered about the wisdom of getting a scope to cool down only to heat it back up again.
Might have to play with this as I installing a boundary layer fan on my dob is an upcoming project. I know that's for a different issue, but while I'm playing with a soldering iron and fan control... :-)
I guess the question I have is does the high frequency vibration caused by the fan affect the image? I'll have to do an AB test, but I figure if you can feel the fan vibrating when you touch the scope, it can't be good?
Thanks for posting.
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