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Juno Perijove 15, September 07, 2018
Kevin Gill
post Sep 8 2018, 06:42 PM
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A couple of details using my updated pipeline

https://github.com/kmgill/cassini_processing



PJ15-19


PJ15-20


PJ15-21


PJ15-22


PJ15-23


Map projected combination of 22 && 23



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Kevin Gill
post Sep 9 2018, 10:12 PM
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Some of the approach images of the North Polar area


PJ15-11



PJ15-15



PJ15-17



PJ15-18
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Gerald
post Sep 11 2018, 08:10 PM
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Here is a link to reprojected images of PJ15, part 2.

I'm currently busy with geometrical calibration for my EPSC talk. I may upload the images to missionjuno and UMSF, after I'll have completed a calibration milestone I've almost accomplished.
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Gerald
post Sep 12 2018, 12:36 AM
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QUOTE (Brian Swift @ Sep 8 2018, 09:50 AM) *
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}

Should be "Resolution is 30 pixels per degree..."

With the flat field, I've conservative in oder to be ready for DCT compressed images, for TDI >> 1, and for energetic particle hits. But with the Huffman encoded images, it may be worth to work directly with the flatfield.

People wanted the images redder. So, I changed to red=0.88. But this may be connected to the strong enhancement I'm usually applying, and the physically non-straightforward human color perception of poorly satutated colors. I might investigate the colors more thoroughly at some future point.

Thanks for the correction of my text! Late at night, and working on several tasks in parallel, I've to live with making errors.

Now, the enhanced reprojections of part 2 of PJ15 I've linked to, above:

PJ15, #24:
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Gerald
post Sep 12 2018, 12:38 AM
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#25:
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Gerald
post Sep 12 2018, 12:39 AM
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#26 and #27:
Attached Image
Attached Image
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Gerald
post Sep 12 2018, 12:41 AM
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#28 and #29:
Attached Image
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Gerald
post Sep 12 2018, 12:43 AM
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#30 and #31:
Attached Image
Attached Image
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Gerald
post Sep 12 2018, 01:06 AM
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#32, and #33:
Attached Image
Attached Image


Btw., I've completed the calibration milestone. But the above images have been rendered with the parameters I've provided after the posts with the part 1 uploads.

Results of the new calibration iteration step are: focal length 1482.29 pixels, optical center (809.09; 609.20), rotation around optical axis 0.00145 radians, K1=-5.75E-8, K2=2.73E-14. The origin (0; 0) of the applied frame is the lower left corner pixel of the CCD (the side with the red filter).
But I think, that it's still possible, that the corners of the CCD are off up to 10 pixels with this approximation. However, that's outside the readout regions. Nevertheless, I'll try to narrow this further down with higher-order approximations.
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Guest_avisolo_*
post Sep 12 2018, 07:27 AM
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Gif of Gerald's Perijove 15 images:
https://i.imgur.com/okSM2pI.gifv
Attached thumbnail(s)
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Sean
post Sep 12 2018, 11:53 AM
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Is this the final tally of images for Perijove 15?


--------------------
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mcaplinger
post Sep 12 2018, 01:32 PM
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QUOTE (Sean @ Sep 12 2018, 03:53 AM) *
Is this the final tally of images for Perijove 15?

No, there are still several more to come.

[edit: as of 14:36 PDT all of PJ15 should be on missionjuno.]


--------------------
Disclaimer: This post is based on public information only. Any opinions are my own.
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Kevin Gill
post Sep 16 2018, 06:07 PM
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Couple more shots from Perijove 15



PJ15-35


PJ15-36


PJ15-37


PJ15-38


PJ15-39


PJ15-40


PJ15-41


PJ15-43


PJ15-58
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Kevin Gill
post Sep 16 2018, 06:16 PM
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And more



PJ15-24


PJ15-25


PJ15-26


PJ15-27


PJ15-28


PJ15-30


PJ15-31


PJ15-32


PJ15-33

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Bjorn Jonsson
post Sep 16 2018, 10:32 PM
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Image PJ15_23, approximately true color/contrast:

Attached Image
Attached Image
Attached Image


And enhanced versions:

Attached Image

Attached Image
Attached Image


IMAGE_TIME = 2018-09-07T01:04:47.244
MISSION_PHASE_NAME = PERIJOVE 15
PRODUCT_ID = JNCE_2018250_15C00023_V01
SPACECRAFT_ALTITUDE = 6651.4
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = 38.1981
SUB_SPACECRAFT_LONGITUDE = 330.5426
TITLE = PJ15 North North Temperate Belt
Resolution at nadir: ~4.5 km/pixel

In the images above the resolution is highest (~4.5 km/pixel) within the brown barge near the right edge of images where a large part of the barge is visible.
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