Europa Flyby - PJ45, September 29, 2022 |
Europa Flyby - PJ45, September 29, 2022 |
Sep 13 2022, 02:58 AM
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#1
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
Juno is set to flyby of Europa on Sept. 29, 2022 (PJ45)
I can't wait to see the results of this flyby! Sadly not much information is available online. Jason Has a beautiful animation of encounter on youtube. https://www.youtube.com/watch?v=r9bx1GcoqEE...nel=volcanopele |
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Sep 30 2022, 06:12 PM
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#2
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Member Group: Members Posts: 427 Joined: 18-September 17 Member No.: 8250 |
Has a blue atmosphere on Europa been imaged by Galileo (or any other observation)?
(I'm haven't convinced myself yet, that it is real. But the uniformity across multiple framelets prevents me from immediately dismissing it as a processing artifact.) The full resolution PNG for PJ45_01 from which this is cropped is at https://www.missionjuno.swri.edu/junocam/processing?id=13834 |
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Sep 30 2022, 07:52 PM
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#3
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
I would attribute that more to chromatic aberration. Europa doesn't have an appreciable atmosphere that I'm aware of.
Has a blue atmosphere on Europa been imaged by Galileo (or any other observation)? (I'm haven't convinced myself yet, that it is real. But the uniformity across multiple framelets prevents me from immediately dismissing it as a processing artifact.) The full resolution PNG for PJ45_01 from which this is cropped is at https://www.missionjuno.swri.edu/junocam/processing?id=13834 |
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Sep 30 2022, 09:13 PM
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#4
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
I would attribute that more to chromatic aberration. Europa doesn't have an appreciable atmosphere that I'm aware of. Chromatic aberration? Would a rotating pushbroom be prone to that? We don't see a red-fringe on the opposite night terminator side of the assembled image. Have we seen blue (red) fringes before? -------------------- |
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Sep 30 2022, 10:47 PM
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#5
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
Chromatic aberration? Would a rotating pushbroom be prone to that? We don't see a red-fringe on the opposite night terminator side of the assembled image. Have we seen blue (red) fringes before? FWIW, Junocam is not a pushbroom. There certainly shouldn't be any significant chromatic aberration, but there are plenty of ways for different color framelets to get misregistered, and that's probably more likely the farther you go from the optic axis. So I agree with John. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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