Ice Halos
Taken by Nicolas Rossetto on October 7, 2012 @
Paris, France
Click photo for larger image
| |
Camera Used: Canon Canon EOS 450D
Exposure Time: 1/640
Aperture: f/9.0
ISO: 100
Date Taken: 2012:10:07 12:27:09
|
|
More images
Details:
The past 3 weeks have been rich in atmospheric optics over Paris, especially last 7th October. The day started well, with already 22° halo circumzenithal arc and part of 46° halo, as seen on one of the picture, where the 46° halo is not stick to the circumzenithal arc.
Later, around noon, the upper Lowitz arc appeared for couple minutes, followed by paranthelion and parhelic circle. During the afternoon, 22° halo was still there, with upper tangent arc and Parry suncave.
Then the top clouds went more thick as the sun dove on the horizon, with the return of circumzenithal arc, the coming of supralateral arc and the short appearence of Parry supralateral arcs.
What a day !
3 of the 4 pictures are processed in black and white after RGB mixing, in order to enhance the colored halos, and stacking of several pictures taken in few minutes to get rid of the clouds heterogeneity.
|
|
|
