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Juno Perijove 26, Junocam Images Incoming! (April 10, 2020)
palebutdot
post Apr 14 2020, 01:00 PM
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Junocam Perijove 26 Images
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volcanopele
post Apr 14 2020, 06:34 PM
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Attached Image


Io image from this perijove along with context. No plumes are visible at the terminator or the limb. There might be a plume deposit around Surt.


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Gerald
post May 7 2020, 05:23 PM
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Drafts:
- part 1
- part 2
- part 3

Reprojections, gamma=4:
- part 1
- part 2
- part 3

Reprojections, gamma=1:
- part 1
- part 2
- part 3


maps, gamma=4:
- parts 1 and 2
- part 3


maps, gamma=1:
- parts 1 and 2
- part 3


maps, high-passed:
- parts 1 and 2
- part 3

Reprojections to common trajectory point:
- methane band image #25
- methane band image #17

Did you notice the shadow of Metis in images #33 and #34?
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Brian Swift
post May 10 2020, 02:05 AM
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Video of PJ26 exaggerated color/contrast images scrolling by at Juno spin rate. https://youtu.be/--8kmD5VmSs
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Bjorn Jonsson
post Jun 2 2020, 09:21 PM
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An experimental anaglyph created by using methane image PJ26_25 to construct a digital elevation model (DEM) of Jupiter's cloudtops. An enhanced mosaic of images PJ26_24 and PJ26_26 was then draped over the DEM:

Attached Image


Two YouTube videos where we fly over the DEM:

https://youtu.be/ysXE6HBjVPQ
https://youtu.be/OhF7oiy3Mik

Vertical elevation differences are greatly exaggerated, probably at least by a factor 5 and possibly more than 10 but this is difficult to estimate accurately.

Two stills from the animations:

Attached Image
Attached Image


As expected, in general bright clouds are higher in the atmosphere than darker clouds. An interesting feature is the many 'walls' of bright clouds, some of which encircle circular or elliptical spots/vortices. Some of the 'walls' have an orange tint. It is possible that at least in some cases this orange color really is due to a high altitude orange haze and that the 'walls' themselves are white
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Brian Swift
post Feb 24 2021, 05:46 AM
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There is a paper submitted to Geophysical Research Letters on arxiv "Detection of a bolide in Jupiter’s atmosphere with Juno UVS" https://arxiv.org/pdf/2102.04511.pdf

Their detection time is 10 April 2020 at 12:57:10 UTC which puts it between PJ26_13 and PJ26_14.
Their location is planetocentric latitude of 53◦N and a System III longitude of 200◦W
They also state the location was not observed by JIRAM or JunoCam.

So, I'm wondering of someone here can easily lookup the Jupiter location/coordinates of JNCE_2020101_26C00014_V01-raw.png
pixel x:1541 y:3402, which looks to be the center of a few pixels wide (possibly elongated) bright red spot.

It will take me a a little while to determine the location with my tools.

Here is what the area looks like brightened some:
Attached Image
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mcaplinger
post Feb 24 2021, 07:37 AM
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QUOTE (Brian Swift @ Feb 23 2021, 09:46 PM) *
So, I'm wondering of someone here can easily lookup the Jupiter location/coordinates of JNCE_2020101_26C00014_V01-raw.png
pixel x:1541 y:3402, which looks to be the center of a few pixels wide (possibly elongated) bright red spot.

Looks like about 71N 157W, so much farther north.
Attached Image

But that does look like something.


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Brian Swift
post Feb 24 2021, 11:30 AM
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QUOTE (mcaplinger @ Feb 23 2021, 11:37 PM) *
Looks like about 71N 157W, so much farther north.

Thanks. I'm coming up with 66.9N 157.7W (xyz={-24537.128481434785`, -10077.142367453582`, 62081.96436960365`})
QUOTE
But that does look like something.

Whatever it is, I can only detect it in the red band. So I wonder if Jupiter atmosphere is red-hot there.
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mcaplinger
post Feb 24 2021, 03:47 PM
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QUOTE (Brian Swift @ Feb 24 2021, 03:30 AM) *
Whatever it is, I can only detect it in the red band.

A transient event that lasts for less than the interframe time will only show up in one band regardless of its actual color.


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Brian Swift
post Feb 25 2021, 12:54 AM
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Here is a close up of spot in PJ26_14 enhanced raw image. The white marks are positioned at +/- 0.5º longitude and latitude from the spot peak.
Since it's a TDI=9 image, I don't have a good enough feel for how much of the size is due to blur vs actual illumination area of atmosphere.
I verified this area isn't imaged in PJ26_15.
The area is imaged in PJ26_13 and PJ26_12, but they have no detectable spot.
However, whoever is searching for lightning should take a look at PJ26_13 raw locations 553,1384 and 345,1825.
Attached Image

Also, here is is a raw image file for PJ26_14 to which white pixels have been set along the SPICE computed limb and also around a small red spot visible on dark side of Jupiter at 66.9N 157.7W - https://www.missionjuno.swri.edu/junocam/processing?id=10084

And here is a map projected view (of the marked raw file) looking down on the red spot - https://www.missionjuno.swri.edu/junocam/processing?id=10085
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