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Juno Perijove 17, December 21, 2018
stevesliva
post Jan 2 2019, 05:50 PM
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QUOTE (mcaplinger @ Jan 2 2019, 11:49 AM) *
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. blink.gif Like Jason's last post... he's repeating himself. biggrin.gif
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volcanopele
post Jan 2 2019, 05:56 PM
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Attached Image


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.


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&@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io
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climber
post Jan 2 2019, 08:35 PM
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For scale context, our Moon would have shown 2,5 times smaller from this distance.
I better understand JunoCam capabilties now.


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jccwrt
post Jan 3 2019, 06:46 AM
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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.
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Gerald
post Jan 3 2019, 06:46 PM
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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:
Attached Image


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.
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Gerald
post Jan 3 2019, 08:28 PM
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... upload continued ...
#19:
Attached Image
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Gerald
post Jan 3 2019, 08:29 PM
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#20, #21:
Attached Image
Attached Image
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Gerald
post Jan 3 2019, 08:31 PM
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#21, #22:
Attached Image
Attached Image
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Gerald
post Jan 3 2019, 08:33 PM
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#23, and #24:
Attached Image
Attached Image

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Gerald
post Jan 3 2019, 08:41 PM
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Here an annotated version of #23, with arrows pointing to moonlet shadow candidates:
Attached Image

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.
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Kevin Gill
post Jan 3 2019, 11:33 PM
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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:

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mcaplinger
post Jan 3 2019, 11:56 PM
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QUOTE (Kevin Gill @ Jan 3 2019, 03:33 PM) *
Some images from my pipeline.

Wow, those are amazing!


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Disclaimer: This post is based on public information only. Any opinions are my own.
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Gerald
post Jan 4 2019, 12:39 AM
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Here are today's three new images:
Attached Image
Attached Image
Attached Image


PNG version.
According drafts.
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Kevin Gill
post Jan 4 2019, 01:17 AM
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QUOTE (mcaplinger @ Jan 3 2019, 07:56 PM) *
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
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Sean
post Jan 4 2019, 01:55 AM
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Lovely work Kevin.

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

PJ17_18 detail







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