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Unmanned Spaceflight.com _ Juno _ Juno Perijove 20

Posted by: Brian Swift May 29 2019, 07:31 AM

Broadcasting the "live" view from SPICE-Enhanced Cosmographia 4.0 at https://www.youtube.com/watch?v=tav67YBTARs

Posted by: Kevin Gill May 30 2019, 06:42 PM

First batch of images from Perijove 20 are down :-)

https://flic.kr/p/2g5GBJ5
https://flic.kr/p/2g5GBJ5

Posted by: Brian Swift May 30 2019, 11:51 PM

Overview of initial downlink...
https://flic.kr/p/2g5RsHQ
https://flic.kr/p/2g5RsHQ

Posted by: Brian Swift May 31 2019, 07:23 AM

https://flic.kr/p/2g5ZZDs
https://flic.kr/p/2g5ZZDs

Posted by: Sean May 31 2019, 02:44 PM

Here is Gerald's pass with my processing...
https://flic.kr/p/2g6bdub

Details...
https://flic.kr/p/2g6aZnM

https://flic.kr/p/2g6aZiZ

https://flic.kr/p/2g6aVan

Posted by: Bjorn Jonsson Jun 1 2019, 01:36 AM

Image PJ20_33 in approximately true color/contrast and enhanced versions:

And a subset of the associated metadata:

IMAGE_TIME = 2019-05-29T08:13:22.554
MISSION_PHASE_NAME = PERIJOVE 20
PRODUCT_ID = JNCE_2019149_20C00033_V01
SPACECRAFT_ALTITUDE = 7724.8 km
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = 8.4848
SUB_SPACECRAFT_LONGITUDE = 14.8662
TITLE = PJ20 North Equatorial Belt
Resolution at nadir: ~5.2 km/pixel

Posted by: MatthewK Jun 1 2019, 09:34 AM

I wonder if Juno will have a box seat for the dissipation of the Great Red Spot!
http://astro.christone.net/jupiter/index.htm

Posted by: Kevin Gill Jun 3 2019, 01:29 AM

Couple selections from Perijove 20 so far...

https://flic.kr/p/2g77DWk
https://flic.kr/p/2g77DWk

https://flic.kr/p/2g6eHJt
https://flic.kr/p/2g6eHJt

https://flic.kr/p/2g6eMLh
https://flic.kr/p/2g6eMLh

https://flic.kr/p/2g6fJCp
https://flic.kr/p/2g6fJCp

https://flic.kr/p/2g6r8N8
https://flic.kr/p/2g6r8N8

https://flic.kr/p/2g7ErZ7
https://flic.kr/p/2g7ErZ7

https://flic.kr/p/2g75mwA
https://flic.kr/p/2g75mwA

https://flic.kr/p/2g6pTt9
https://flic.kr/p/2g6pTt9

Posted by: Sean Jun 4 2019, 10:14 AM

The Abyss
https://flic.kr/p/2g81xWa

Title & source by Gerald...

Posted by: Kevin Gill Jun 4 2019, 05:38 PM

Mighty Jupiter.

A composite of 45, 47, 49, & 50 from the perspective of 45.

https://flic.kr/p/2g8K3J2
https://flic.kr/p/2g8K3J2

Posted by: Kevin Gill Jun 4 2019, 08:52 PM

North Pole Composite

JNCE_2019149_20C00021_V01, JNCE_2019149_20C00024_V01, & JNCE_2019149_20C00026_V01. Rendered from the perspective of '21.

https://flic.kr/p/2g8Rdvd
https://flic.kr/p/2g8Rdvd

Posted by: Sean Jun 6 2019, 11:26 AM

Perijove 20 sequence GE/SD

Full
https://flic.kr/p/2g9GmwG

Edit
https://flic.kr/p/2g9GpxG

Posted by: Kevin Gill Jun 6 2019, 06:06 PM

Another PJ20 Wide-Angle Composite

JNCE_2019149_20C00043_V01
JNCE_2019149_20C00045_V01
JNCE_2019149_20C00046_V01
JNCE_2019149_20C00047_V01
JNCE_2019149_20C00048_V01
JNCE_2019149_20C00049_V01
JNCE_2019149_20C00050_V01

Rendered from the perspective of '43.

https://flic.kr/p/2g9S59m
https://flic.kr/p/2g9S59m

Posted by: Kevin Gill Jun 6 2019, 07:17 PM

Perijove 20 Composite #3

JNCE_2019149_20C00029_V01
JNCE_2019149_20C00028_V01
JNCE_2019149_20C00026_V01
JNCE_2019149_20C00025_V01

Rendered from the perspective of '29.

https://flic.kr/p/2g9UAKc
https://flic.kr/p/2g9UAKc

Posted by: Brian Swift Jun 6 2019, 08:11 PM

Nice composites Kevin. How are you handling the brightness variations between images?
Lot of manual work, or do you have an algorithm?

Posted by: Kevin Gill Jun 6 2019, 09:59 PM

QUOTE (Brian Swift @ Jun 6 2019, 03:11 PM)

Nice composites Kevin. How are you handling the brightness variations between images?
Lot of manual work, or do you have an algorithm?

Lots of manual alignment, blending, and brightness adjustments.

Posted by: Sean Jun 7 2019, 11:51 PM

Details...
https://flic.kr/p/2gauznR

https://flic.kr/p/2gaw6DQ

https://flic.kr/p/2gaugkr

https://flic.kr/p/2gavPp5

https://flic.kr/p/2gauoBY

https://flic.kr/p/2gaVkFX

Posted by: Kevin Gill Jun 9 2019, 08:55 PM

I put all my processed imagery for PJ20 (pre-photoshop) onto a Google Drive share if anyone would like a stab at enhancing them: https://drive.google.com/open?id=1sFQm2wNfnns-DRAj1x7k3_b_APm8QyEA

Posted by: Brian Swift Jun 10 2019, 06:59 AM

I've created a couple Augmented Reality globes for PJ20, viewable with a device running iOS 12 or newer.
This uses https://developer.apple.com/augmented-reality/quick-look/ to display USDZ formatted objects.

http://www.mandelbits.com/arworlds.html at http://www.mandelbits.com/arworlds.html

Posted by: Sean Jun 10 2019, 12:12 PM

That looks so great Brian, almost makes me wish I had Apple OS!

Kevin, thanks for sharing these 3D outputs, it's great to see your raws... can I ask what version of Blender you are using? The blend file doesn't open on version 2.79.

Posted by: Kevin Gill Jun 10 2019, 03:21 PM

QUOTE (Sean @ Jun 10 2019, 07:12 AM)

Kevin, thanks for sharing these 3D outputs, it's great to see your raws... can I ask what version of Blender you are using? The blend file doesn't open on version 2.79.

I'm using the latest 2.8 development build.

Posted by: Kevin Gill Jun 11 2019, 12:05 AM

North Polar Composite.

Uses '19, '21, '23, '24, '25, '26, & '28. Rendered from the perspective of '25.

https://flic.kr/p/2gc7oZr
https://flic.kr/p/2gc7oZr

Posted by: JRehling Jun 11 2019, 01:22 AM

Beautiful work, Kevin. It looks like there's a spiral galaxy inside that storm near the pole!

Posted by: fredk Jun 11 2019, 02:01 AM

"...my God! — it's full of stars!"

Posted by: Brian Swift Jun 12 2019, 05:21 PM

Following Kevin's lead, I've also upload an archive of my PJ20 files to Google Drive (~11GB)
https://drive.google.com/drive/folders/1mK1aqZqC7Q_49XTkqDn4H1IlMOS985XH

File Descriptions:

CODE

Pipeline implementation Mathematica Notebook
    Juno3D.nb
Blender configuration file
    JunocamLibrary.blend 
Juno3D Phase 1 Outputs for Blender
    Wavefront OBJs
        Geometry
            P##_##.obj
        Material to Texture Associations
            P##_##.obj.mtl
        Textures. Separate Red, Green, Blue images. Decompanded, gain/debias adjusted, sRGB encoded.
            P##_##b_u#.png   
            P##_##g_u#.png
            P##_##r_u#.png
    Metadata used in Phase 2
        P##_##.obj.info.mx
    Blender instructions to import Wavefront Object , define camera position of each framlet, set rendering camera
        P##_##.obj.py  
    Script with Blender commands to render Phase 1 images
        blenderBatch-############.sh
Blender Output
        225°x60° Image. EXR format because "Z" values used in Phase 2.
            CP##_##_##_#.exr
Juno3D Phase 2 Outputs
    Wavefront OBJs 
        non-tweaked non-filtered variant
            RP##_##nt_nf.obj
            RP##_##nt_nf.obj.mtl
            RP##_##nf_u#.png 
            RP##_##nt_nf.obj.py
            RP##_##nt_nf.obj.info.mx 
        tweaked geometry and contrast enhanced for EQR Map variant
            RP##_##tE_ax.obj 
            RP##_##tE_ax.obj.mtl 
            RP##_##ax_u#.png
            RP##_##tE_ax.obj.py 
            RP##_##tE_ax.obj.info.mx
        Scripts that load all Phase 1 images into Blender for each variant
            blender###cmd-############-nt_nf.sh
            blender###cmd-############-tE_ax.sh
EQR Map produced from blender###cmd-############-tE_ax.sh script
    xRP##_eqrmap_############-tE_ax_#####.png
Juno3D Experimental Outputs 
    Fly-under animation key-frames setup instructions for Blender
        keyframes##fps-############.py
    Wavefront OBJ for AR Globe
        pj##tE_ax_deskNup.obj
        pj##tE_ax_deskNup.obj.mtl
        pj##tE_ax_deskNupDb_u#.png
        pj##tE_ax_deskNup.obj.py 
    AR Globe USDZ format
        pj##tE_ax_deskNup.usdz
    Wavefront OBJ Long/Lat Grid 
        AGrid.obj
        AGrid.obj.mtl
        AGridDb_u#.png
        AGrid.obj.py 

11/11/2019 - re-uploaded as folder of files because there was a corruption in the previously uploaded .zip

Posted by: Brian Swift Jun 13 2019, 06:36 AM

P20_37, P20_38 Stereogram Attempt.

https://flic.kr/p/2gdjY85https://flic.kr/p/2gdjY85

Overlapping portion of P20_37, P20_38 projected from midpoint between two {76287,-31190,-12311}.
Contrast enhanced. Apply Linear to sRGB conversion to get natural-ish contrast.
Top P20_37, P20_38. Bottom P20_38, P20_37.

Rendered with Blender Perspective camera set to 30° Field of View and 2048x2048 resolution.

Ratio image, P20_38 / P20_37. Going to need to think about the regional structure.
https://flic.kr/p/2gdkx92https://flic.kr/p/2gdkx92

Posted by: Bjorn Jonsson Jun 17 2019, 01:04 PM

Approximately true color/contrast and enhanced versions of image PJ20_26 (Jet N5):

The spot near center is quite dark but not exceptionally so. Its brightness relative to nearby areas is comparable to e.g. the brown barges.

Posted by: Bjorn Jonsson Jun 19 2019, 12:03 AM

Image PJ20_40 in approximately true color/contrast and enhanced versions:

Posted by: Gerald Jun 20 2019, 10:51 AM

In the meanwhile, I've compiled a PJ20 flyby. Here is a link to the https://www.youtube.com/watch?v=oKH1nUmTNyI&feature=youtu.be. Here http://junocam.pictures/gerald/uploads/20190620/.

Those are illumination-adjusted with a 5th degree polynomial illumination function over 2 parameters, designed specifically for PJ20. Nevertheless, there are obvious shortcomings near the limb resulting in brightness fluctuations in the flyby movie by auto-exposure. I may eventually review this more globally, and derive a 3 parameter solution, but I can't spend too much time on this question in the very short run. Review will probably take place in a few weeks.

Posted by: Gerald Jun 20 2019, 01:02 PM

Here is a list of links to more or less preliminary PJ20 renditions. Illumination adjustment of these renditions is based on PJ06.

Part 1:
http://junocam.pictures/gerald/uploads/20190531/,
http://junocam.pictures/gerald/uploads/20190531a/,
http://junocam.pictures/gerald/uploads/20190531b/,
http://junocam.pictures/gerald/uploads/20190531c/,
http://junocam.pictures/gerald/uploads/20190610/.

Part 2:
http://junocam.pictures/gerald/uploads/20190601/,
http://junocam.pictures/gerald/uploads/20190601b/,
http://junocam.pictures/gerald/uploads/20190601d/,
http://junocam.pictures/gerald/uploads/20190601c/.

Part 3:
http://junocam.pictures/gerald/uploads/20190604/,
http://junocam.pictures/gerald/uploads/20190605/,
http://junocam.pictures/gerald/uploads/20190606a/,
http://junocam.pictures/gerald/uploads/20190606/.

Some more products are still work in progress, and I might eventually find time to review most of those renditions with a different illumination model / BRDF / phase function.

https://www.britastro.org/node/18571 for some more derived products, comments, and annotations.

Posted by: Brian Swift Jul 10 2019, 05:57 AM

Jupiter Fly-under Time-lapse | 360° VR, 8K, 60FPS
Imaginary view flying under the clouds in a hollow Jupiter.
https://youtu.be/zsfYELsDI6w

Posted by: Bjorn Jonsson Jul 21 2019, 07:02 PM

Image PJ20_34 in approximately true color/contrast versions:

Enhanced versions:

Posted by: Bjorn Jonsson Jul 21 2019, 07:20 PM

The PJ20 images showing areas near the equator are especially interesting.

Below is an enhanced map-projected image processed from PJ20_34 showing the area from planetographic latitude 5 degrees south to 6.6 degrees north. The image has been processed to better reveal various subtle features and color variations. The enhancement/processing parameters differ for different parts of the image. The enhancement is strongest in areas that have low contrast in the original imaging data.

Various interesting cloud features can be seen; perhaps the strangest one is the 'fleet of ships' (a term first used by John Rogers in his PJ20 report) in the lower right quadrant of the image. Interestingly the 'ships' are oriented at an angle of roughly 30-60 degrees relative to faint north-south oriented striations in this area. The visual impression I get from the image is that the 'ships' are higher in the atmosphere but this could easily be wrong. Similar features are visible in a few Voyager 1 images obtained shortly before closest approach but the new JunoCam images are much better.

A number of additional interesting features are also visible in this image; many of them look very subtle in a true color/contrast version of this image (see below).