Jupiter and GRS - Europa and its shadow - Ganymede (MAILLARD)

Contains: Solar system body or event

Jupiter and GRS - Europa and its shadow - Ganymede

Acquisition type: Lucky imaging

Jupiter and GRS - Europa and its shadow - Ganymede

Acquisition type: Lucky imaging

It's been two years since I had the opportunity to image Jupiter and its satellites.

The task was not simple in monochrome because with WinJupos it is not possible to integrate the moons into the processing given the size dedicated to the image.
So I proceeded to the treatment of the planet alone as usual with WinJupos, after AS and AstroSurface.
For the moons I selected by IR-G-B channel the best video, then processing with AS and AstroSurface.
The IRIS software then allowed me to realize the color alignment of the three channels for each moon.
Finally, it was a question of making the final image in Photoshop with these three images of Jupiter, Ganymede and Europa using the layer function.
The exact position of the moons is fortunately given by WinJupos with the RGB derotation function of Jupiter so here 20:17 UT which corresponded to a video B. This blue image served as a time reference for me.

This image represents Jupiter accompanied by Europa who casts his shadow there. This moon is a real ball of ice hence this strong luminosity under solar lighting.
And Ganymede the largest of Jupiter's moons with its 5260 km diameter.
(Our Moon = 3475 km)
It is very interesting because it shows details, with two areas, a very cratered and therefore ancient dark region and light areas.

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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

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Jupiter and GRS - Europa and its shadow - Ganymede

Jupiter and GRS - Europa and its shadow - Ganymede

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Jupiter and GRS - Europa and its shadow - Ganymede

Jupiter and GRS - Europa and its shadow - Ganymede

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