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Juno perijove 9, October 24, 2017, near solar conjunction
Sean
post Nov 7 2017, 08:37 AM
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Some processed & cropped hilites...

















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jccwrt
post Nov 9 2017, 01:54 AM
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Striving towards an enhanced but still naturalistic processed version. This is my take on #084, which includes a photobomb by Io and Europa.


Southern Hemisphere - JunoCam

A very close look at Io shows a circular reddish spot at about the 9 o'clock position. There are some subtle albedo features around the 2 o'clock position as well. My guess (and this is only a guess), is that they are the Pele plume deposits and the region around Issum Patera, respectively. Here's a 4x enlarged image. (To view the uncompressed image, click through and add '/sizes/o' to the end of the url)


Io - JunoCam
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Brian Swift
post Nov 9 2017, 07:04 AM
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Some Videos:
PJ09 Approach Movie
JunoCam CCD's view of #91
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Sean
post Nov 12 2017, 09:19 PM
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New pass on Perijove 09 [G.Eichstadt] Upscaled, processed, patched & reframed...

PJ09_76



PJ09_78



PJ09_79


PJ09_80


PJ09_90


PJ09_91


*update*
PJ09_81


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Sean
post Nov 14 2017, 06:55 PM
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PJ09_82


PJ09_92


PJ09_89


PJ09_Sequence1


PJ09_Sequence3





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Gerald
post Nov 16 2017, 03:56 PM
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Perijove-09 inbound RGB images, reprojected, and enhanced. Illumination adjustment is based on PJ-06 TDI-2 images, and may be biased.
I'm elaborating approach and some departure PJ-09 images in more detail, since they are likely to be the only visible light Jupiter images of a major part of its surface available during solar conjunction.

Departure images are more challenging to process due to spacecraft maneuvers, and due to the position of Jupiter approaching the left margin of JunoCam's fov, where geometric calibration is particularly tricky. I'll see over the next few days, how far I can get, hopefully over the first two Jupiter days (i.e. 20 hours) after PJ-09, at least.

I might find time to infer a PJ-09 specific illumination model before PJ-10, but I'm not yet sure.
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JRehling
post Yesterday, 02:08 AM
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These pictures are convincing me that there will eventually be enormous scientific payoff from the Juno imagery, despite the official disclaimers. The still images alone speak to the dynamics taking place, and in concert with the deep-looking radiometry and lower-resolution images from Earth that provide greater temporal coverage, seemingly must speak volumes to the atmospheric dynamics at large and small scales.

And also: They are stunning! You amateur image wizards are working wonders.
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Tom Tamlyn
post Yesterday, 08:57 PM
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The Atlantic posted an article today by Marina Karen titled The Photoshoppers Behind Dreamy Jupiter Photos, which quotes members Gerald Eichstädt, Seán Doran, Björn Jónsson, Roman Tkachenko, Emily Lakdawalla, and Jason Major (listed in the order mentioned).

https://www.theatlantic.com/science/archive...ictures/546146/

The article includes a passage that echoes JRehling's observation about the scientific value of these images:

QUOTE
JunoCam wasn’t designed for scientific purposes—its sole mission is, quite literally, to take pretty pictures—but the Juno team has used the images to better understand the meteorology of gas giants, in our solar system and beyond. “Jupiter can be considered as representing a population of gas giants, likely a widespread population of celestial bodies in the observable universe,” Eichstädt said. “Understanding Jupiter means understanding non-negligible portions of our universe.”
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Bjorn Jonsson
post Yesterday, 10:15 PM
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Here is a montage of several versions of PJ-9 image 93:

Attached Image


A: An approximately true color/contrast image.
B: An approximately true color/contrast image where the effects of global illumination have been removed. This reveals dimly lit features near the terminator.
C: Same as B but in addition, the colors and contrast have been exaggerated and small scale details sharpened to better reveal various features.
D: Same as the previous version with the addition of a latitude/longitude grid. This reveals the location of Jupiter's south pole.

A subset of the metadata:

IMAGE_TIME = 2017-10-24T18:39:10.279
MISSION_PHASE_NAME = PERIJOVE 9
PRODUCT_ID = JNCE_2017297_09C00093_V01
SPACECRAFT_ALTITUDE = 79834.2 km
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = -78.1351
SUB_SPACECRAFT_LONGITUDE = 279.7929
TITLE = Southern timelapse
Resolution at nadir: ~54 km/pixel
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