The 1874 transit of Venus observations in Latin America

Record summary

International expeditions observed the 1874 transit of Venus from stations in and around Latin America, producing extensive records of unusual solar and optical appearances. Reports of dark spots, luminous points, and apparent objects near the Sun are relevant to comparison with later UAP claims because they show how instrumentation and observing conditions shaped nineteenth-century anomaly reports. The exact station and wording must be established from expedition publications. Most apparent anomalies in transit observations had optical, instrumental, or atmospheric explanations, though observers sometimes disagreed.