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Originally Posted by Striker
just a shame it's F9.
Bring it in at F6 and I will think about it.
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I have just bought one from Bintel and I am going to shorten the tube by 100mm so I can attain focus with my new experimental focal reducer. It will behave as a 576mm F5.76. The trick with FR's is to start with very good optics. I would not do this with a ridiculously expensive APO. Ok when this works I will.
Bert