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Burgess, Orion, Williams Optics all the same thing AFAIK. I would try a 2X barlow if you can get one easily on it and see if that works, which it should. A $10 OCS doesn't sound good to me. I have used my WO's with 1.6 OCS on an f5 8" Newt no problems with focusing. Andrews Communications sell the WO OCS's for $30 I think. Might be an idea to ring them and ask what you need, Luke is very helpful.
Matt
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