JunoCam "Marble Movie", July 10 through October 14 Options

[S_Walker]

Here's my interpretation of frame JNCE_2016240_00C6159_V01.
Wow, thats a ton of work for one image!
I stuck with a straight RGB combine, and increased the saturation 15%. Corrected some distortions in Photoshop.
the right version uses multiple high-pass filter layers, also performed in Photoshop.

Sean Walker

Attached thumbnail(s)

 

[Gerald]

Marble movie on youtube, and AVI version now covering parts 1 to 7 in good quality. The rapid approach to Jupiter begins about 10 seconds before the end of the video.
Without warranty, I think, it's composed of 2890 level-2-processed JunoCam RGB images.
It's notified to the missionjuno site.

This has been quite some work, but probably easy compared to the processing of the close-ups of August 27 to come. So far this was doable without SPICE. So, my next step is preparing the SPICE trajectory for mangling into the processing, and implementing a spheroid version for the Jupiter model, instead of just using a spherical model as for Earth flyby.

[elakdawalla]

New topic created for discussion of the PJ1 image release. The Marble Movie is going to continue for another orbit, so we'll keep this thread open for that.

[ugordan]

Awesome work, Gerald!

[alan]

Could the lack of banding at high latitudes be due to a different balance between energy from the sun and the internal heat released?

[mcaplinger]

Could the lack of banding at high latitudes be due to a different balance between energy from the sun and the internal heat released?

Nobody knows. It is known that Jupiter is roughly isothermal across latitudes even though there's more energy from the sun at the equator, which is already pretty weird. Obviously the poles have lower rotational speed, but it's not even known how deep the winds are.

"Dynamics of Jupiter's Atmosphere" by Andrew P. Ingersoll et al is a great place to start (if you need to write a bunch of image captions in a hurry, for example. )

[tanjent]

A screen grab from the video recently posted by Emily in her blog certainly shows the polar region as equally warm if not warmer, (at at least one specific wavelength and depth), as the average of warm and cool bands in the temperate regions. On Earth I never heard of aurorae raising the atmospheric temperature, but in Jupiter's supercharged environment could this be happening? Straightforward atmospheric mixing might help make the temperatures more uniform at different latitudes, but for the poles to actually be warmer than the tropics would seem to require a more imaginative explanation.

[Hungry4info]

My understanding is that the darker zones represent clouds that are opaque to the wavelengths the camera is sensitive to. So it isn't that Jupiter is "cooler" there, but rather, there are higher altitude clouds present.

[Gerald]

The three last pre-pj1 rgb marble movie images animated in 60 second steps per frame (level 1 reprojected directly from raws), hence 1500-fold time-lapse, covering 1.5 hours:
 jnc_mable_pre_pj1_c6155_c6157_c6159_v47.avi ( 609.65K ) Number of downloads: 257

Together with the pj1 images, it should be possible to cover most of the north polar region from marble movie images, although of varying quality.

[Gerald]

A glimpse at the first 30 post-pj1 Marble Movie RGB images, level 1:

[elakdawalla]

I *just* came here to point out that post-PJ1 Marble Movie images had been posted, and see that you beat me to them, Gerald The last image in the archive is from September 3. I'll work on downloading....

[Gerald]

The test run of the part 8 drafts has been with the parameters derived from images at the end of part 6.
But I see a small misalignment. So I'm running a new calibration with images of end of part 8.
The small offset might be fully explainable by the simplified camera model I'm using for the marble movie images.
Whatever the root cause, assuming a spinup during PJ1 by 0.25% returns better results. No idea, whether that's real, by kind of aerobreaking, some thrust, HGA motion, or just a model artifact.

While I'm processing the images with adjusted parameters, here a manually enhanced version of this second run, showing the Great Red Spot, and a nice shadow, possibly with umbra and penumbra distinguishable:

(credit: NASA / JPL / SwRI / MSSS / Gerald Eichstädt)

I'd think, that I'll be able to provide the full set of part 8 and part 9 rgb level 1 thumbnails within the next about 4 hours.

Edit: sorry, this post has been intended for the Marble Movie thread. [FIXED. --MOD.]

[Gerald]

Level 1 stills of parts 8 and 9 (immediately after PJ1) of JunoCam "Marble Movie" are available now as zipped pngs.

I'll first work on level 2. After that, I might re-render the level 1 images where Jupiter has been too large to fit.

[elakdawalla]

Thanks! Thumbnails now added to my Marble Movie index page.

[Gerald]

Hi Emily, there is a residual inconsistence between the link to the processed pngs

CODE

https://planetary.s3.amazonaws.com/data/juno/marble/gerald/JNCE_2016240_00C6195_V01_ge.png

and the actual respective file name

CODE

https://planetary.s3.amazonaws.com/data/juno/marble/gerald/JNCE_2016240_00C6195_V01.png

for parts 8 and 9.

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Level 2 images look good. I'm going to assemble them.