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Juno, perijove 12, April 1, 2018
PhilipTerryGraha...
post Mar 28 2018, 04:10 AM
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So, according to the voting page, apparently the spacecraft's being spun around to get the instruments pointed directly at the planet. Io and Ganymede will also be imaged during this pass, as they'll come into view of JunoCam two hours before and twelve hours after closest approach, respectively. For Io, the team are "planning to take two pictures - one exposed nominally and one that over-exposes Io to look for volcanic plumes extending above the surface." The Great Red Spot is also expected to come into view during the spacecraft's departure.

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Here's a logo for Perijove 12 I threw together, by the way. biggrin.gif


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mcaplinger
post Apr 3 2018, 12:35 AM
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First batch of PJ12 images are available on missionjuno.

It's taking a while since most of the DSN passes are only 40 Kbps.


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Sean
post Apr 3 2018, 06:12 AM
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PJ12_85




Happy Easter indeed.


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Gerald
post Apr 3 2018, 06:18 AM
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After a long night of PJ12 image processing, the sun is shining again.
First, here a link to the RGB drafts.

Now, the JPG version of reprojected images in reverse order:

#086:
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Gerald
post Apr 3 2018, 06:19 AM
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#085:
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Gerald
post Apr 3 2018, 06:21 AM
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#084:
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Gerald
post Apr 3 2018, 06:23 AM
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#082, and #081:
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Gerald
post Apr 3 2018, 06:27 AM
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#080, #079, and #077:
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Gerald
post Apr 3 2018, 06:35 AM
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#076, #075,
#074, #073,
#072, and #71:

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Some of the images have been taken with TDI 3, one with TDI 6, in order to improve S/N for the CPCs (circumpolar cyclones). This caused overexposure of portions of the respective images.
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Gerald
post Apr 3 2018, 07:18 AM
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Link to PNG version. The early approach images are white in these renditions due to the percentile-based exposure adjustment applied. I may render smaller crops for the approach sequence later; this will avoid the whitening.
Note the moon shadow in #41.
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Sean
post Apr 3 2018, 10:40 AM
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PJ12_85 [G.Eichstadt]

Details...




( processed/blended/edge fills )




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Sean
post Apr 3 2018, 08:29 PM
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Thanks to Gerald's efforts, here are some PJ12 portraits...

PJ12_Sequence_Part1


PJ12_80


PJ12_81


PJ12_82


PJ12_84


PJ12_85


PJ12_86


*Upscaled, white balance, local contrast, repaired, each layer blended & masked ( depending on image content ) before downscaling, consolidating edits.




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PhilipTerryGraha...
post Apr 4 2018, 05:39 AM
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Quick question, what was the distance between the spacecraft and Io when Juno took its pictures of the moon?


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Brian Swift
post Apr 4 2018, 07:02 AM
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QUOTE (PhilipTerryGraham @ Apr 3 2018, 10:39 PM) *
Quick question, what was the distance between the spacecraft and Io when Juno took its pictures of the moon?

If anyone answers this for Philip, can you also post which spice kernels were loaded to make the determination.
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mcaplinger
post Apr 4 2018, 03:03 PM
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QUOTE (Brian Swift @ Apr 3 2018, 11:02 PM) *
If anyone answers this for Philip, can you also post which spice kernels were loaded to make the determination.

Using juno_pred_orbit.bsp at webgeocalc, the distance was about 550,000 km.


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