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We report the visual observation and the photographic recording of the atmospheric optical phenomenon known as anti-solar rays, that occurred in the city of Ponta Grossa, PR (latitude 250 7’S and longitude 500 10’W), on March 3rd, 2007. The atmospheric conditions are also described. The rays not only converged in the east as the sun was setting, but crossed the whole celestial vault, a phenomenon that is considered very unusual.

publicatio uepg. ciências exatas e da terra, ciências agrárias e engenharias./publicatio uepg. ciências exatas e da terra, ciências agrárias e engenharias

OBSERVACAO DOS RAIOS ANTI-SOLARES NOS CEUS DA CIDADE DE PONTA GROSSA, PR