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Message: <blockquote data-quote="Musoman" data-source="post: 1672897" data-attributes="member: 80278">Thanks !Eyepieces are no good for birding then i take it. The MAX dslr is next to buy, and a 2" ED Barlow then. Yes, sorry - i forgot about you using the barlow housing as your ext tube. I'll have a go at that before i waste money on ext tubesI may have to wait till some of my gear gets sold off - I blew my main wedge on the above, but i should get a decent price for my 500 sigma - assuming someone wants it.I've also emailed jwpone, who appears to have not posted here in months, but have read that he used an AF confirm chip - i really need to pick his brains to find out how this works with a scope</blockquote>