Uranus
Taken by Dominique Duchesneau on October 31, 2020 @
Semnoz Mountain, France
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Camera Used: Unavailable Unavailable
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Details:
On the night of 31/10 it was possible to profit from a reasonable weather to travel in the solar system jumping from Mars to Uranus.
Uranus is high in the sky in this period, and close to its opposition.
Usually, due to a methane layer at the top of the atmosphere absorbing the
red wavelengths the planet
exhibits a turquoise colour without any visible structure.
However using a specific R+IR long pass filter it is possible to highlight some cloud band structures existing below the methane haze. Those structures depend on the planet orientation with respect to the sun.
Using a 200mm telescope to image a planet 3 billions of km from Earth can be seen as a challenge that worths to try.
In order to check that the structures are not an artefact of the image treatment an other picture has been captured with the camera rotated by 90 degrees.
Photographer's website:
No URL provided.
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