[X] My Assistant

[volcanopele]

Now that we are a month out from the Ganymede encounter, I'm creating a special thread just for this encounter.

A few basic facts about the encounter:

The encounter takes place June 7, 2021 at 16:56:07.972 UTC at an altitude of 1042 km from Ganymede's surface. The central latitude and longitude of the close approach point is 23.58 N, 57.62 W. The inbound leg occurs over Ganymede's nightside while the outbound leg covers the dayside, allowing for imaging of Ganymede's leading and sub-Jovian hemispheres.



The best imaging opportunities occur after closest approach, with dayside imaging possible between +00:15 and +06:45 at distances between 1050 km and 5690 km above Ganymede's surface (though the first pass will be along the terminator and the last pass will only capture a bit of the bright limb). This allows for JunoCAM images with resolutions between 0.71 and 3.82 km. The best imaging opportunity in my opinion is centered at +01:45 when Juno is 1,515 km above Ganymede. This allows for imaging at around 1 km/pixel, doesn't cover the terminator or too much of the limb, and allows for detailed imaging of Perrine Regio and Tros crater, a prominent ray crater within Phrygia Sulcus. A Cosmographia screen shot of the center time for this pass is below.



I've updated my simulation video of the encounter, now making use of updated trajectory and now has real orientation information.

https://www.youtube.com/watch?v=H_UO3EFB6l0

[MarcF]

Congratulations to all those involved in the JUNO mission. These first images are just amazing ! I did not expect the JunoCam pics to be so sharp and even did not know that the SRU would be able to take such Jupiter-shine images. The low Sun angle helps and we see Tros as never before. I agree with Bjorn, I'm sure that we will get many surprises once the data from the other instruments will be analyzed (internal structure, global ocean, surface composition, thin atmosphere, magnetic field,...). What a world ! The JUNO extended mission is really a new mission. This is only the beginning... and I'm already bluffed !!

[TrappistPlanets]

Congratulations to all those involved in the JUNO mission. These first images are just amazing ! I did not expect the JunoCam pics to be so sharp and even did not know that the SRU would be able to take such Jupiter-shine images. The low Sun angle helps and we see Tros as never before. I agree with Bjorn, I'm sure that we will get many surprises once the data from the other instruments will be analyzed (internal structure, global ocean, surface composition, thin atmosphere, magnetic field,...). What a world ! The JUNO extended mission is really a new mission. This is only the beginning... and I'm already bluffed !!

yeah, the sharpness is absolutely outstanding

i was even able to make a 4k map from the junocam image
https://cdn.discordapp.com/attachments/7537...e_juno_2021.png

if i could, i probably could make a 8k map from the image

[volcanopele]

if i could, i probably could make a 8k map from the image

I'd honestly hold off. Within the next day or so I'm sure we'll have the full raw image and it can be map-projected in something like ISIS without the quick look image seams and with limb fitting/geometric control.