Contains:  Solar system body or event
Jupiter - Differential rotation, MAILLARD

Jupiter - Differential rotation

Acquisition type: Lucky imaging
Jupiter - Differential rotation, MAILLARD

Jupiter - Differential rotation

Acquisition type: Lucky imaging

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Description

It seemed interesting to me with the help of these four images to highlight the differential rotation of jupiter's cloud circulation.
I used the R channel (IR filter 610), for a better perception of details in monochrome, but also and especially because of the low height on the horizon of the planet, detrimental to the quality of the green and blue channels. 

The alternately light and dark bands observed in its atmosphere are in fact relatively fluid and permanent cloud layers located at different altitudes. The light stripes are called areas, the dark stripes the belts.These belts and zones show a differential rotation between equatorial and polar regions.This rotation is very fast, so are the winds. Thus, in the equatorial zone (<30° latitude) the winds blow at nearly 540 km/h and we can speak of jet currents. Above 30° latitude, the winds blow around 144Km/h. 

You can see this phenomenon by comparing on version B, the images of 2021-06-23 and 2021-07-20, almost a month apart.  Taking the GRS as a reference, you note the different position on each image of a large white cloud inside the equatorial zone (EZ).

 Version C gives the details and naming of the different cloud layers and their directions of movement.

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  • Final
    Jupiter - Differential rotation, MAILLARD
    Original
  • Jupiter - Differential rotation, MAILLARD
    B
  • Jupiter - Differential rotation, MAILLARD
    C

B

Description: Differential rotation

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C

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Jupiter - Differential rotation, MAILLARD