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Juno, perijove 14, July 16, 2018
Sean
post Jul 17 2018, 01:31 PM
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Another processed detail from Matt's output... PJ14_20




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Sean
post Jul 17 2018, 02:32 PM
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Another processed detail from Matt's output... PJ14_22






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mcaplinger
post Jul 17 2018, 03:00 PM
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QUOTE (Gerald @ Jul 16 2018, 11:57 PM) *
Now some context of the blips in raw images...

Note that these were lightning search images in two different colors. The most likely explanation IMHO is that they are, in fact, lightning, but the team is working through various alternatives.

The fact that they look like point sources without any charge bleed or smear despite the high level of TDI suggests to me that their duration was no more than a few tens of milliseconds (total exposure time was about 200 milliseconds).


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Gerald
post Jul 17 2018, 05:45 PM
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Agreed. A virulent thunderstorm with a high lightning frequency could explain how there can be a bright blip minutes apart in #002 and #003. But just to be sure, a network of impact observers is triggered. More context data from Earth are useful no matter whether it's lightning or impact.
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mcaplinger
post Jul 17 2018, 06:09 PM
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QUOTE (Gerald @ Jul 17 2018, 09:45 AM) *
More context data from Earth are useful no matter whether it's lightning or impact.

I guess, although I think the impact hypothesis is so unlikely as to not be worth any particular action (but perhaps that is excessively conservative of me.) However, not providing location information makes any context search difficult (unless it's very, very obvious.)

The two flashes in pj14-002 were at about 60N 220 and 38N 210 and the flash in pj14-003 was at about 60N 280.


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Explorer1
post Jul 17 2018, 06:49 PM
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Speaking of collisions:

https://www.theguardian.com/science/2018/ju...rbiting-jupiter

12 new moons to welcome to the club, one in an unstable orbit.... 78 total!

(Mods please move to a more appropriate spot if possible; I can't see any other topics in the Jupiter forum)
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Gerald
post Jul 17 2018, 11:03 PM
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QUOTE (mcaplinger @ Jul 17 2018, 08:09 PM) *
The two flashes in pj14-002 were at about 60N 220 and 38N 210 and the flash in pj14-003 was at about 60N 280.

Thanks! I've forwarded your coordinate estimates.
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Sean
post Jul 18 2018, 01:49 PM
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PJ14_19 portrait from Brian Swift's pipeline


Filled gaps, repaired artifacts & added stars.


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Sean
post Jul 18 2018, 11:01 PM
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PJ14_20/21/22 reprojected using Matt Brealey's Juno Observer tool [alpha]







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Gerald
post Jul 19 2018, 12:18 AM
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#23:
Attached Image
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Gerald
post Jul 19 2018, 12:19 AM
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#24, #25:
Attached Image
Attached Image
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Gerald
post Jul 19 2018, 12:21 AM
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and #26:
Attached Image
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Gerald
post Jul 19 2018, 01:18 AM
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Link to PNG version of part 2, RGB files.
And drafts without SPICE and shape model.
Note the varying opacity of the atmosphere along the limb, especially for #23.
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Sean
post Jul 19 2018, 01:43 PM
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Thanks Gerald.

Here is a mosaic of 2 composites made with PJ14_20/21/22 using Matt Brealey's Juno Observer tool... including a fair bit of Photoshop to merge, process & repair.





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Gerald
post Jul 19 2018, 02:39 PM
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Looks like Matt has been able to fix the geometry glitches he's been working on. So we now have a broader basis for good JunoCam image renditions.

QUOTE (xflare @ Jul 17 2018, 09:39 AM) *
Can you provide any more information on these images??

Now finally, yes. I've uploaded cylindrical maps with 30 pixels per degree, just enough to resolve the most distinct blips in #002 and #003. On a global scale they are pretty small. In absolute terms, we are on the scale of a few 100s of km.
And here most maps of PJ14, part 1 for even more context.

Anthony Welsey (Australia) and Clyde Foster (South Africa), at least, have been able to take telescopic images around PJ14. So, we'll get some idea about the larger weather systems nearby.
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