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PubliУ? le 13/08/2012 par Comolli Lorenzo

composizione_el3.jpg


Date : 06/06/2012
Lieu : Pian dell'ArmУљ, Italian Apennines
MatУ?riel de prise de vue : TEC 140 + webcam b/w
Commentaires : Venus aureole at egress. Because of bad seeing from my observing location I was not able to capture the ring of fire like in 2004. Nevertheless a very faint aureole on the North Pole of Venus was visible. This image is a composition of a short exposure for the Sun (time 4.46.55 UT) and long exposure for the aureole (time 4.46.28 UT).
venere03.jpg


Date : 06/06/2012
Lieu : Pian dell'ArmУљ, Italian Apennines
MatУ?riel de prise de vue : TEC 140 + Canon 5D
Commentaires : Sunrise with Venus and the green rim. Note also the differential refraction in the Venus disk (red rim above, blue-green rim below). TEC140, 5D, ND3.8 astrosolar, 1/30 s, 100 ISO, 3.49 UT.