Venus atmospheric ring
Taken by Didier Favre on June 1, 2020 @
Brétigny-sur-Orge, France
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Could it be the ring of fire that unites Venus with the Sun?
I do not remember having struggled so much to make an astronomical image. From sunrise we felt the possibility of doing something interesting but as soon as the instrument was directed towards Venus, a lot of diffusion appeared in the field of vision because of the numerous dusts and pollens in suspension. However, moving the instrument, we felt the texture of the planetary disc very slightly nuanced compared to the background of the sky. However, impossible to distinguish the ring on a single film but yet, at times, one has the impression that it is taking shape. It took patience and waiting for the star to rise gently above the horizon. The sky then became more and more coronal but it is necessary to work at more than 100 fps to freeze the turbulence which does not help the task. The tips, limits of the incomplete atmospheric ring, seem to elongate but still nothing visible to the naked eye. It is then necessary to overexpose the pictures to extend and close the ring, if it is present. On a single film, still nothing but an extremely weak signal seems to betray the presence of the phenomenon. So I make a whole series of films of which I will pile up the final images hoping to obtain what I seek. The ring can now be guessed, so I try a last series of films to accentuate his vision. Alas, the Sun, because of the angular proximity of Venus (barely 2 °) is already present in the instrument illuminating the sensor too much. This puts an end to the shooting series that I started on April 26 but I put it back from June 6 if the weather permits. While waiting, I share with you this result that I have learned from this adventure. For once, not unhappy with me, because it is a first for me.
Astronomically!
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