Água, lua e muita sorte
Autor: Stevan Chimite | Publicado: 2011-10-13T09:20:00-07:00

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O fenômeno conhecido como moonbow, ou arco-íris lunar, é fruto da rara combinação de céu escuro, lua baixa e umidade. É preciso sorte para ver e mais sorte ainda para estar devidamente equipado para registrar o momento. A dificuldade está na pouca luminosidade do ambiente, que obriga o fotógrafo a usar um ajuste de tempo maior na abertura do obturador da máquina fotográfica. Daí a aparência granulada da imagem. Como o tempo de exposição é longo, fica fácil estragar a foto se a câmera não estiver fixa, então é importante ter um tripé por perto. O arco-íris lunar é normalmente visto em grandes quedas d’água. Em lugares como as Cataratas Vitoria, entre Zâmbia e Zimbábue, as cataratas Cumberland, em Kentucky, Estados Unidos, Cataratas Yosemite, na Califórnia e Waimea, no Havaí, existe uma possibilidade maior de ver o fenômeno. Se estiver por perto de algum desses lugares, não esqueça de estar bem equipado.



Dirigindo em direção ao arco-íris, Ilha Fraser, Austrália.



Um pote de ouro no fim do arco-íris, Taiti.


Imagem do Clube de Astronomia de Asheville, em Maui, Havaí.



Cataratas Yosemite, Califórnia.



A bela curva de cores nas Cataratas Cumberland.



Moonbow nas Cataratas Vitória, entre Zâmbia e Zimbábue.



Outra foto das Cataratas Yosemite.



Cataratas Yosemite, Califórnia.



Bela foto das Cataratas Vitória.