Juno perijove 9, October 24, 2017, near solar conjunction |
Juno perijove 9, October 24, 2017, near solar conjunction |
Nov 7 2017, 08:37 AM
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#16
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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Nov 9 2017, 01:54 AM
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#17
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Member Group: Members Posts: 306 Joined: 4-October 14 Member No.: 7273 |
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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Nov 9 2017, 07:04 AM
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#18
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Member Group: Members Posts: 411 Joined: 18-September 17 Member No.: 8250 |
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Nov 12 2017, 09:19 PM
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#19
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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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Nov 14 2017, 06:55 PM
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#20
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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Nov 16 2017, 03:56 PM
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#21
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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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Nov 17 2017, 02:08 AM
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#22
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
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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Nov 17 2017, 08:57 PM
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#23
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Member Group: Members Posts: 444 Joined: 1-July 05 From: New York City Member No.: 424 |
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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Nov 17 2017, 10:15 PM
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#24
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IMG to PNG GOD Group: Moderator Posts: 2251 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Here is a montage of several versions of PJ-9 image 93:
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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Nov 19 2017, 08:05 PM
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#25
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Junior Member Group: Members Posts: 80 Joined: 18-October 15 From: Russia Member No.: 7822 |
At the edge of the abyss (Jupiter at 4467 km)
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Nov 20 2017, 12:01 AM
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#26
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
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Nov 20 2017, 05:29 PM
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#27
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
My JunoCam workflow still isn't 100% satisfactory, but was able to work these up over the weekend after realizing I had nothing good from Perijove 9. I'm using a script which simply grabs each strip and stacks them by color band. It doesn't yet do any spice-based alignment or reprojection, but I'm hopeful I can figure that part out. The script also does a histogram equalization and grayscale contrast adjust. I take the output into Photoshop, do some manual alignment, brightness adjustment, and sometimes a HDR toning for contrast and structure. Finally, I make final adjustments for tone, presence, sharpening, & noise in Lightroom.
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Nov 20 2017, 09:18 PM
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#28
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
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Nov 21 2017, 12:30 PM
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#29
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Junior Member Group: Members Posts: 80 Joined: 18-October 15 From: Russia Member No.: 7822 |
Io as seen by Juno
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Nov 21 2017, 07:37 PM
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#30
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
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