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How much are you prepared to pay Mike?
Ever thought of a Tele-extender. Using extended eyepiece projection with one you can achieve ridiculously long focal lengths. Using a 20mm lens I can achieve 12500mm focal lenght on a 2000mm meade SCT. If I use a 15mm lens it can go up to 17333mm FL.
If you're interested I'll have a bit of a play next weekend and see what sort of image scale I can get out of it.
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