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The Astrophoto's Directory		 Thursday 20 November 2008 - 17h05 GMT
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Directory Root >> Events >> Atmospheric Optics >> Halos >> Complex halo displays

Arc de Parry (1600 x 1200 - 218 Ko)

©Serge Vasseur [info]

Photo taken on Saturday 19 October 2002 in Anserville ( Oise)
[Digital Photo Camera]
CANON Powershot A 20
Exposure : Auto
[Without telescope]
seen 1822 times
Author 's note :
Rare phenomene de l'optique atmospherique.
Neanmoins, ce jour-là, a Beauvais(60) et dans sa region celui-ci evoluait au-dessus de nos tetes, durant pres de deux heures, de l'apres-midi au couchant.
L'image fut prise vers 17h TU, hauteur du soleil: ~7°.
Le grand arc en V aux bords courbes est l'arc tangent superieur, le
second, plus petit, emboite dans le precedent est l'arc de Parry.

Internet users' notes :
Notes only available for members.
Richard DUTEIL
r.duteil[arobase]wanadoo.fr
 Saturday 07 February 2004 - 15h22 GMT
superbe

Adjust the brightness and contrast of your monitor so that you can see each step separately.
Pay more attention to the black steps here. The darkest step should be as dark as you can
make it while still being able to distinguish it from the next lighter step.

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