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andrews have some cheap az3 mounts in their used section, i still think a used ed80 [old gold tube] if you can get one at a reasonable cost will be good, or the 4" short tube is also a good idea, on some of them the CA isn't all that bad..how much do you want to spend on the ota?
andrews also sell a 90mm f6.5..slightly reduced CA over the f5 refractors.
you might also consider the 130mm heritage dobs, the table top..though the focuser is a bit flimsy
do you have any big binos to take with you?
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