The OAG is the Lumicon 2" newtonian/refractor easy guider... its backfocus is 22mm.
The CFW 2-7 fully loaded is fairly damned heavy, my focuser easily handles it..... I've got a FT 2025 CBR on the way for the little baby TMB... Although I've got my eye squarely focused on the Tak FSQ-85EDX... All the upsides of the FSQ106 minus the weight and size... 44mm fully illuminated and fully corrected image circle, easy big enough for the KAF16803..
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