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Juno Perijove 15, September 07, 2018
Sean
post Sep 8 2018, 12:09 AM
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PJ15_19,20,21,22,23


From Brian Swift's pipeline





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Brian Swift
post Sep 8 2018, 01:16 AM
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PJ15_22 processed with updated Mathematica pipeline available at GitHub which includes flat-field/debias correction and new color balance.
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Sean
post Sep 8 2018, 02:18 AM
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Nice job Brian, I'm clearing out some hard drive space for the script update.

Here is my take on this awesome output...


Aligned rgb channels & image process. ( & flipped it )


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Gerald
post Sep 8 2018, 04:44 AM
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PJ15 drafts, part 1.
Reprojected RGBs, part 1.

My upload bandwidth to missionjuno was rather narrow most of the night. So, some delay.

Here the reprojected RGBs in JPG:
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Gerald
post Sep 8 2018, 04:45 AM
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#22:
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Gerald
post Sep 8 2018, 04:46 AM
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#21:
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Gerald
post Sep 8 2018, 04:47 AM
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#20:
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Gerald
post Sep 8 2018, 04:49 AM
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#19:
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Gerald
post Sep 8 2018, 04:51 AM
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#18, and #17:
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Gerald
post Sep 8 2018, 04:56 AM
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#15, #11
#10, #09
#08, #07,
and #06:
Attached Image
Attached Image

Attached Image
Attached Image


Attached Image
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mcaplinger
post Sep 8 2018, 05:00 AM
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Brian, the large image you put inline makes this page load very slowly.


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Disclaimer: This post is based on public information only. Any opinions are my own.
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Gerald
post Sep 8 2018, 05:07 AM
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Btw., this is the -- technical -- description I've added to the missionjuno upload:

The image is reprojected according to a slightly modified, and still preliminary geometrical camera model, cleaned from most repetitive camera artifacts and from most energetic particle hits, approximatly illumination adjusted, and stretched with gamma=4 with respect to radiometric values.
Applied camera geometry: pinhole focal length 1482.5 (square) pixels, Brownian radial distortion parameters K1=-6.0E-8, K2=3.0E-14, CX=809, CY=610.01, for all filters, relative to system with the following lower edge of readout regions: red 306, green 461, blue 616, left-most pixel column at x=0.
Juno rotation period=80.935 interframe delays, and roughly estimted to 30.063 sec, rotation phase of CCD around JunoCam's optical axis = 0.00153 radians relative to orthonormal frame defined by Juno's spin. Rotational angle around JunoCam's x-axis has been adjusted manually.
Geometry shift due to TDI has been neglected, as well as velocity aberration.
Assumed Jupiter shape model: 1 bar IAU Jupiter Maclaurin sheroid, rotating according to L3 longitude system.
Linear radiometric weights applied to decompanded colors: 0.88 for red, 1.0 for green, 2.17 for blue. Color interpolation is bilinear. Effects of global flat field and stray light have been neglected.
Resolution is 30 degrees per degree in an equdistant cylindrical system centered to the camera at image stop time, with an axis parallel to Juno's spin axis. The rendered field of view is 60x180 degrees.
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Brian Swift
post Sep 8 2018, 07:17 AM
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QUOTE (mcaplinger @ Sep 7 2018, 09:00 PM) *
Brian, the large image you put inline makes this page load very slowly.

Sorry about that. I've changed it to a smaller version.
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Brian Swift
post Sep 8 2018, 07:50 AM
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QUOTE (Gerald @ Sep 7 2018, 09:07 PM) *
Linear radiometric weights applied to decompanded colors: 0.88 for red, 1.0 for green, 2.17 for blue. Color interpolation is bilinear. Effects of global flat field and stray light have been neglected.

I was pleasantly surprised that implementing the flat field correction cleared up the repetitive artifacts without need for any additional masking and filling. (For TDI=1 images)

FWIW, my current flat field derived color balance is {0.838223, 1., 2.37871}
QUOTE
Resolution is 30 degrees per degree...

Should be "Resolution is 30 pixels per degree..."
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Sean
post Sep 8 2018, 03:47 PM
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Gerald's sequence & details...


















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