Contains:  Solar system body or event
Saturn and its satellites – composition, MAILLARD

Saturn and its satellites – composition

Acquisition type: Lucky imaging
Saturn and its satellites – composition, MAILLARD

Saturn and its satellites – composition

Acquisition type: Lucky imaging

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Description

Some of you have probably noticed that I haven't commented on their images for several days.I had the immense pain of losing my 62-year-old brother to cancer. I needed time to regain the strength to return to the site.In fact, I believe that the passion that drives and brings us together via Astrobin is a comfort for me and a way to keep moving forward..Regarding this image that I had begun to process before this drama, it is a composition, the result of two nights of imagery.In order to be able to capture several satellites of Saturn, I chose to switch the C11 to its native focal length of 2800 mm. The reduced field allowed this result. However, it was obvious that this would produce an undersampling for the planet and therefore a loss of definition.So I recovered an image of Saturn made on 18-07-2022 with a focal length of 6500 mm, then applied a reduction in its size in order to integrate it into the final image while maintaining all the proportions. This solution remains acceptable, on the one hand because Saturn has hardly evolved in a few days and it does not present very marked details.  This solution could not have been achieved with Jupiter for example.Regarding the satellites, I was able to align the colors with one IRGB run, on Titan, Tethys and Rhea. For Mimas, Enceladus and Dione, I used only the IR channel, because of the low light G and B. They are therefore in B/W. Version B shows the position on Winjupos of the satellites for the selected central time.Version C is therefore the saturated image of the IR channel that was used for the three satellites in B/W.

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Revisions

  • Final
    Saturn and its satellites – composition, MAILLARD
    Original
  • Saturn and its satellites – composition, MAILLARD
    B
  • Saturn and its satellites – composition, MAILLARD
    C

B

Title: Winjupos animation

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C

Title: Canal IR

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Histogram

Saturn and its satellites – composition, MAILLARD