Juno Perijove 31, December 30, 2020 Options

[Brian Swift]

Appears to be Ganymede

Thanks Geraled for pointing this out. Ganymede shows up in earlier images as well, along with blue-green Io (as agent 86 would say, "missed it, by that much".)

[volcanopele]

Io is coming in the next batch just for you, Jason! May be out there already.

Yeah, Kevin Gill and I were just talking about them on Twitter. No plumes, though the only plume site on the limb or on the terminator was Chalybes on the bright limb.

I am encouraged to see that JunoCAM is picking up Jupitershine pretty well. Makes me even more excited for the Io flybys.

[Gerald]

Two individual crops of PJ31, #034 and #036, drafts to Io

(from drafts, part 3)

and a stack of both


---

Here a condensed view of Jupiter's limb, PJ31, #020, to show how rapidly the hazes and hence the limb or apparent radius of Jupiter can change:

[JRehling]

Nice work! I think there's a hint of surface detail in the jupitershine side of Io, but it's subtle.

[Decepticon]

Extended mission has been approved?

I've not seen any mention of this.

[mcaplinger]

Extended mission has been approved?

Not yet AFAIK.

[Kevin Gill]

A couple detail shots from PJ31:


Jupiter - PJ31-18/19/20/21 - Map Detail



Jupiter - PJ31-19 - Detail



Jupiter - PJ31-19 - Detail



Jupiter - PJ31-19 - Detail



Jupiter - PJ31-35



Jupiter - PJ31-33 - Map Detail



Jupiter Mid-Southern Detail - PJ31-39/40

[Kevin Gill]

And a few marble composites:



Jupiter - PJ31 - Composite - 35 - 2



Jupiter - PJ31 - Composite - 37 - 3



Jupiter - Perijove 31 - Composite\

[Kevin Gill]

Perijove 31 Map and a few shots using it:


Jupiter - Perijove 31 - Map Composite


Jupiter - PJ-31


Jupiter Southern Temperate Region - PJ-31


Jupiter - Southern Hemisphere - PJ31


Jupiter - PJ31

[Kevin Gill]

Perijove 31 Flyover Movie. Music is from Tom Toomey, guitarist from The Zombies.

Jupiter - Perijove 31 Flyover Movie

[Bjorn Jonsson]

This is an experimental PJ31 flyby movie covering the period from 21:08:59 to 22:43:29 on December 30, 2020:

https://vimeo.com/557347305

To create the animation I used all of the JunoCam RGB images from image PJ31_7 to image PJ31_43 and also a small patch from image PJ31_47. This is a total of 34 images. I processed these into several seamless map-projected mosaics at resolutions ranging from 80 to 450 pixels/degree. The effects of the varying solar illumination were removed using a slightly modified Lambert illumination model combined with a new limb darkening function. The maps were then processed to enhance the contrast and colors a bit.

The animation was then rendered by using different maps for different parts of the animation. When rendering the animation, shading was applied using the same illumination model as the one originally used to remove the illumination, i.e. modified Lambert and a new limb darkening function. The parameters were slightly modified in order to slightly increase the brightness of dimly lit areas near the terminator and poles relative to bright areas.

At close range, Jupiter didn't look realistic with a perfectly sharp limb so I also added some atmospheric effects. These effects are a bit exaggerated, especially in the dimly lit polar areas. Also Jupiter's bluish sky at the limb is brighter and more conspicuous here than it is in most of Juno's images.

Overall Jupiter should look fairly realistic. I enhanced the contrast and colors a bit though but not as much as I usually do in enhanced versions of the images I have processed.

[Brian Swift]

This is an experimental PJ31 flyby movie covering the period from 21:08:59 to 22:43:29 on December 30, 2020:
https://vimeo.com/557347305

Stunning work Björn.

[antipode]

Reviving this old thread because it involves this perijove

https://www.nasa.gov/image-feature/jpl/nasa...ning-on-jupiter

P