Buenos Aires light pollution is intense, so dark-sky drives toward the pampas matter for deep-sky work. Southern winters still put the Magellanic Clouds and Scorpius high for coastal observers.
Pampero fronts can scrub humidity and leave excellent transparency overnight.
Argentina · Río de la Plata · ~34.6°S
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Learn: Is tonight good for stargazing? · How to see the Milky Way