You can find power adapters at travel stores, or even WalMart. The one I took to Honduras had the various countries or regions where it might be applicable listed right on the package.
BTW, we were not allowed to carry on our scope. Security at the gate informed us only one carry-on into Honduras was allowed, so we had to make some quick and scary decisions; the poor scope had to go with baggage. Call your airlines to see if Mexico is similar, and at least your scope can be packed appropriately.
Beam me up, Scotty
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