Juno Perijove 17, December 21, 2018 |
Juno Perijove 17, December 21, 2018 |
Dec 29 2018, 04:19 AM
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#16
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
Moons
Brian's script... I've upscaled these 300% PJ17_02 PJ17_03 PJ17_04 PJ17_05 PJ17_06 there is a color channel astray in this last frame -------------------- |
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Dec 29 2018, 04:13 PM
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#17
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
I think your processing may be filtering out an interesting aspect of the Io images, especially pj17-006.
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Dec 29 2018, 05:14 PM
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#18
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
Direct result from Brian's script without any additional processing by me ( except cropping )
I can see a bright-ish dot in the center of one of the moons... and a bright flare on the other ( PJ17_06 ) PJ17_02 PJ17_03 PJ17_04 PJ17_04 PJ17_05 PJ17_05 PJ17_06 PJ17_06 -------------------- |
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Dec 29 2018, 06:40 PM
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#19
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
Where's Jason Perry when you need him?
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Dec 29 2018, 06:47 PM
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#20
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
I can see a bright-ish dot in the center of one of the moons... and a bright flare on the other ( PJ17_06 ) The "flare" is a blooming artifact, ignore it. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Dec 29 2018, 11:10 PM
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#21
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This is image PJ17_13 in two different versions:
At left is an approximately true color/contrast version. The version at right is also approximately true color/contrast but the effects of the variable illumination have been removed. This reveals details in dimly lit areas near the terminator, including on the night side just beyond the terminator (there the night side is faintly illuminated by scattered light from Jupiter's sky). The bluish color near the terminator in the image at right is a processing artifact and not a real feature. |
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Jan 2 2019, 02:21 AM
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#22
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
-------------------- |
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Jan 2 2019, 02:50 AM
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#23
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
https://www.swri.org/press-release/light-fr...no-jupiter-moon
QUOTE A team of space scientists has captured new images of a volcanic plume on Jupiter’s moon Io during the Juno mission’s 17th flyby of the gas giant. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jan 2 2019, 07:51 AM
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#24
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Senior Member Group: Members Posts: 2920 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
Thanks Mike. They are suprised Juno can detect plumes but they don’t provide the distance from the spacecraft to Io. Anyone get the information?
Thanks -------------------- |
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Jan 2 2019, 02:34 PM
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#25
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
They are suprised Juno can detect plumes but they don’t provide the distance from the spacecraft to Io. I didn't have much to do with this press release. If you read the Junocam image caption, it says "The image... was acquired at 12:20 (UTC) on Dec. 21, 2018. The Juno spacecraft was approximately 300,000 km from Io." -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jan 2 2019, 03:29 PM
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#26
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
SPICE Geometry calculator is your friend:
https://wgc.jpl.nasa.gov:8443/webgeocalc/ 46.9298 N, 75.3948 W 299,083 km Sorry Mike, I had a lot of family in town for the holidays so I haven't been keeping up with Juno lately (besides I usually focus on JIRAM data when it hits the PDS). Congrats to your team on an amazing photo of a plume! Now that I am back at work, I get a nice Io diversion! YAY! Plume is from Chalybes Regio eruption, btw. Most significant post-NH eruption, has been ongoing since October 2008. I'm focusing mostly on the JIRAM image from the press release. I can say that the brightest hotspot is not Chalybes Regio, but Tvashtar, so that one is active again (it's been pretty quiescent for much of the Juno mission) -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jan 2 2019, 03:41 PM
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#27
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Senior Member Group: Members Posts: 1582 Joined: 14-October 05 From: Vermont Member No.: 530 |
Plume is from Chalybes Regio eruption, btw. Most significant post-NH eruption, has been ongoing since October 2008. I'm focusing mostly on the JIRAM image from the press release. I can say that the brightest hotspot is not Chalybes Regio, but Tvashtar, so that one is active again (it's been pretty quiescent for much of the Juno mission) This says so much with few words. Thanks! The image release had little geological context. |
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Jan 2 2019, 04:41 PM
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#28
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Best I could do with the JIRAM image. brightest hotspot is Tvashtar (but that's not the plume, Chalybes is). other bright hotspots include Chalybes 1, Chalybes 2, Zal, Janus, Vivasvant, W Zal, Amirani, Gishbar, and Tawhaki. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jan 2 2019, 04:49 PM
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#29
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Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
The image release had little geological context. 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. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jan 2 2019, 05:11 PM
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#30
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Understandable. The volcano is new since Galileo and New Horizons so the area doesn't scream "major volcano" on maps.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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