Juno Perijove 17, December 21, 2018 Options

[stevesliva]

Mostly because none of us know as much about Io as Jason does. I spent several hours on Christmas looking at maps of Io and trying to figure it out without much luck.

You'd catch hell for speculating. I know. Wasn't supposed to be an indictment! I'm just more amazed at how many questions were anticipated and answered in a single line. Like Jason's last post... he's repeating himself.

[volcanopele]

This is a very preliminary overlay between the JunoCAM image and a basemap. I'll want to actually dig into the raw data to I can be sure that all images are scaled more accurately, but again, shows that the plume is coming from Chalybes Regio. Looks like the source region? Nope, that end seems to move a bit from perijove to perijove so maybe that's the flow front? Consistent with most other Io plumes.

[climber]

For scale context, our Moon would have shown 2,5 times smaller from this distance.
I better understand JunoCam capabilties now.

[jccwrt]

Here's #024, modified from Gerald's drafts. It captures the NEB from an altitude of ~5000 km.

North Equatorial Belt - JunoCam

It looks like a moon shadow (likely Thebe's, if it is a shadow) is passing over the cloudtops at center right - this feature is also present in images #022 and #023 and appears to be slowly moving based on its position relative to the dark streamer beside it. Amalthea's eclipse shadow is also visible along the horizon in image #023.

[Gerald]

Wow, you've all been rather busy, while I've been offline a few days!

Here is a link to drafts with the moon images during approach, and of part 2 close-ups.
And here reprojections of the close-ups, part 2.

Here is a jpg copy of #18:


I may continue upload of jpg copies in a few hours. In the meanwhile, you may ponder about possible moonlet shadows in images #22 to #24. I think, the shadow near the limb is real, while another candidate appears to be at a constant location, hence presumably something else.

[Gerald]

... upload continued ...
#19:

[Gerald]

#20, #21:

[Gerald]

#21, #22:

[Gerald]

#23, and #24:

[Gerald]

Here an annotated version of #23, with arrows pointing to moonlet shadow candidates:

I've rendered cylindrical maps of images #22, 23, and 24. They showed, that the upper candidate in the rendition didn't move in a perceivable way. So, probably only the lower arrow is pointing to an actual shadow.

[Kevin Gill]

Some images from my pipeline. Replaced the perspective camera render in OpenGL that I was using with the panorama camera in Blender. I'm still working on the specific camera settings that I like and will try to automate it as much as possible (I'm currently doing the Blender part manually).











And with a equirectangular panorama:

[mcaplinger]

Some images from my pipeline.

Wow, those are amazing!

[Gerald]

Here are today's three new images:


PNG version.
According drafts.

[Kevin Gill]

Wow, those are amazing!

Thanks!

And I'm finally able to create an overview strip using Sean's layout:

Perijove 17 Jupiter Overview as of Jan 3 2019

[Sean]

Lovely work Kevin.

Here is an enhanced product based on Gerald's outputs...

PJ17_18 detail