Juno, perijove 14, July 16, 2018 |
Juno, perijove 14, July 16, 2018 |
Jul 17 2018, 01:31 PM
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#16
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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Jul 17 2018, 02:32 PM
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#17
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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Jul 17 2018, 03:00 PM
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#18
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
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). -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 17 2018, 05:45 PM
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#19
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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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Jul 17 2018, 06:09 PM
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#20
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
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. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 17 2018, 06:49 PM
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#21
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Senior Member Group: Members Posts: 2082 Joined: 13-February 10 From: Ontario Member No.: 5221 |
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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Jul 17 2018, 11:03 PM
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#22
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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Jul 18 2018, 01:49 PM
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#23
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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Jul 18 2018, 11:01 PM
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#24
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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Jul 19 2018, 12:18 AM
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#25
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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Jul 19 2018, 12:19 AM
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#26
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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Jul 19 2018, 12:21 AM
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#27
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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Jul 19 2018, 01:18 AM
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#28
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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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Jul 19 2018, 01:43 PM
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#29
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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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Jul 19 2018, 02:39 PM
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#30
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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.
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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