Contains:  Solar system body or event
Saturn 2018 to 2021, Niall MacNeill

Saturn 2018 to 2021

Acquisition type: Lucky imaging
Saturn 2018 to 2021, Niall MacNeill

Saturn 2018 to 2021

Acquisition type: Lucky imaging

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Description

I put together this montage & GIF animation of the changes in Saturn from 2018 to 2021. I used my best images from each of the years.
Clearly the rings are flattening from year to year. 2018 shows how active the NPR was with several storms in evidence. In 2019 the NPR was a distinct light green colour and the Hexagonal Polar Vortex (HPV) was particularly prominent. By 2020, the NPR had turned a red-brown colour and the lower contrast made the HPV more difficult to see. By this time the blue southern hemisphere of the planet had appeared below the rings in these substantially north up images. My recent image from 2021 shows another dramatic change in the colour of the NPR now a dark green, once again making the HPV easier to see despite the narrowing angle. More of the beautiful turquoise blue Southern Hemisphere has become visible. 
I included a GIF animation where you can readily see the changes from year to year in Revision B.

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Revisions

  • Final
    Saturn 2018 to 2021, Niall MacNeill
    Original
    Saturn 2018 to 2021, Niall MacNeill
    B

B

Description: GIF animation of sequence from 2018 to 2021

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Histogram

Saturn 2018 to 2021, Niall MacNeill