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Directory Root >> Events >> Atmospheric Optics >> Halos >> Tangent arcs

Arc tangent supérieur 05 (567 x 425 - 34 Ko)

©Serge Vasseur [info]

Photo taken on Monday 15 May 2006 in Presles, Courcelles (Val d'Oise)
[Digital Photo Camera]
CANON Powershot S 50
Exposure : 1/1500s à 8,0
[Without telescope]
seen 1149 times
Author 's note :
Heure locale: 16h20
Hauteur du soleil: 47°
Cet arc tangent semble s'être formé au-dessus de ces Cumulus Humilis.
A cet hauteur du soleil l'arc tangent supérieur se confond avec le halo à 22° et l'arc supralatéral.
Après le lever et avant le coucher du soleil, cet arc s'affiche dans le ciel sous la forme d'un superbe V, à ne pas rater!!!

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