Quote:
Originally Posted by erick
US$450! Gulp! Cost more that the whole OTA! But that is exactly what I want! Thanks - more ideas for a home-built solution.
EDIT: Thanks big time. I've just googled "rotating rings for telescope" and I have a swag of ideas to consider! 
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Check out the weight first if you decide to go for metal rotating rings. I've seen these ones on a 10" newt and they need quite a few counterweights to balance things up.