Hrm, this is really interesting. Currently I have a bintel 2x barlow which in length is the same as the Orion Shorty. I think this barlow would be a good upgrade, though I only really use it with my 6.4mm meade - would it be worth it if just for that?
Also would it cause problems seeing as I have a 4" F/5 scope in terms of being able to bring the 6.4mm into focus?
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