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Unmanned Spaceflight.com _ Juno _ Juno Perijove 13

Posted by: mcaplinger May 24 2018, 09:03 PM

The first batch of PJ13 images have been posted to missionjuno.

Posted by: mcaplinger May 24 2018, 11:17 PM

Note that because the spacecraft antenna was pointed at the Earth during this pass, we are looking way off nadir in these images, which make them deviate from round significantly in non-map-projected form (and look like cashews in the point-perspective form that we use in our processed products.) It would be interesting to know if there's a way to fix this cosmetically without doing a real map projection.

Posted by: Gerald May 24 2018, 11:19 PM

http://junocam.pictures/gerald/uploads/20180525/.

Posted by: Gerald May 24 2018, 11:37 PM

QUOTE (mcaplinger @ May 25 2018, 01:17 AM) *
... It would be interesting to know if there's a way to fix this cosmetically without doing a real map projection.

For cosmetic purposes, one could apply something like y' = sin(y) to the drafts (neither using trajectory, nor shape model), with y=0 near the vertical center, and y interpreted as an angle between about -pi/2 and pi/2.

Posted by: Sean May 25 2018, 12:10 AM

Here is an early pass using Brian Swift's pipeline...
https://flic.kr/p/2688HpZ

PJ13_29
https://flic.kr/p/24K9RJY

PJ13_28
https://flic.kr/p/24K9SHb

PJ13_27
https://flic.kr/p/2688ETX

PJ13_26
https://flic.kr/p/2688Fkt

PJ13_25
https://flic.kr/p/2688FNH

PJ13_24
https://flic.kr/p/2688Ghi

PJ13_23
https://flic.kr/p/2688GAK

PJ13_21
https://flic.kr/p/2688GQn


Posted by: Gerald May 25 2018, 01:53 AM

This was faster than I could do my uploads.

Here my reprojections, JPG versions:
#029:


Posted by: Gerald May 25 2018, 01:54 AM

#028:


Posted by: Gerald May 25 2018, 01:56 AM

#27:


Posted by: Gerald May 25 2018, 01:58 AM

#026:



#025:

Posted by: Gerald May 25 2018, 01:59 AM

#024:


Posted by: Gerald May 25 2018, 02:00 AM

#023:


Posted by: Gerald May 25 2018, 02:07 AM

#021, #019, #017, #015, and #013:






http://junocam.pictures/gerald/uploads/20180525a/.

Posted by: Sean May 25 2018, 12:13 PM

And now for Gerald's...

PJ13_27
https://flic.kr/p/26pNvk3






Posted by: mcaplinger May 25 2018, 03:12 PM

QUOTE (Sean @ May 25 2018, 04:13 AM) *
And now for Gerald's...

I'm curious to know how the two different processing methods affect your workflow. Your original Brian Swift pipeline version looks about the same as this to my eye, the only difference I see are some uncorrected CCD blemishes (and some global brightness variation, this one is brighter near the terminator.)

Posted by: Gerald May 25 2018, 04:50 PM

Look a little closer to see the residual channel alignment issues. Those are hard to resolve without shape model and trajectory.
This would be more evident http://junocam.pictures/gerald/uploads/20180525a/JNCE_2018144_13C00027_V01-raw.bmp_reproj_30px_30.456000s_cx805.0_000000_taylorIncEm.bmp_sphC_.html.

Posted by: Sean May 25 2018, 07:18 PM

Brian's pipeline is good for global views at scale since there are alignment offsets which are quite obvious on some images taken closer to the planet.

Here are a few more of Gerald's recent batch...
https://flic.kr/p/Kokf9f

PJ13_25
https://flic.kr/p/HSj5Uc

https://flic.kr/p/HSj36B

PJ13_26
https://flic.kr/p/27whw18

https://flic.kr/p/27whshr


Posted by: Sean May 25 2018, 07:20 PM

PJ13_27 4k Wallpaper
https://flic.kr/p/27wh8GF

https://flic.kr/p/27rZKBL



PJ13_28
https://flic.kr/p/Kojw8b

https://flic.kr/p/269x8iZ

PJ13_29
https://flic.kr/p/24Lz6sq

https://flic.kr/p/27rZnvb

Posted by: Gerald May 26 2018, 07:38 AM

I was so fascinated of your post-processed versions, SeŠn, that I almost forgot to process part 2.

Then I fell asleep during upload.
But eventually, here http://junocam.pictures/gerald/uploads/20180526/, and http://junocam.pictures/gerald/uploads/20180526a/.

And here the JPGs of the reprojected versions:
#30, and #31:



Posted by: Gerald May 26 2018, 07:40 AM

#35, and #36:


Posted by: Gerald May 26 2018, 07:42 AM

#37, and #38:


Posted by: Gerald May 26 2018, 07:45 AM

#40, #41, and #42:


Posted by: Gerald May 26 2018, 07:47 AM

#43, #44, #45:


Posted by: Gerald May 26 2018, 07:48 AM

#46, 47, #48:


Posted by: Gerald May 26 2018, 07:51 AM

And finally #49, and #50, taken with TDI 3 in order to improve the visibility of the terminator:


Posted by: Sean May 26 2018, 08:56 AM

I'm glad you got some sleep at least... Jupiter never sleeps! smile.gif

Posted by: Sean May 26 2018, 10:58 AM

Gerald's PJ13 sequence...
https://flic.kr/p/HToqFx

http://www.gigapan.com/gigapans/208529





Posted by: avisolo May 26 2018, 01:20 PM

GERALD U R AMAZING!!!
Here's my initial animation of your images - please share - no time can be lost in enlightening the public:)

Latest flyby of Jupiter by NASA's Juno spacecraft
https://i.imgur.com/cuAWKNQ.gifv
Credits: NASA / SwRI / MSSS / Gerald Eichstšdt / Avi Solomon

Posted by: Sean May 27 2018, 12:29 AM

12 Perijoves

262 images

http://www.gigapan.com/gigapans/208544

1 Jupiter
https://flic.kr/p/26sxgqb






Posted by: Sean May 28 2018, 11:52 PM

PJ13_42 using Brian's pipeline...
https://flic.kr/p/27y4xEA



Posted by: Gerald May 30 2018, 01:14 AM

PJ-13, part 3, http://junocam.pictures/gerald/uploads/20180530/ and http://junocam.pictures/gerald/uploads/20180530a/.

#065, and #066 show moons, especially Io.

Some of the images are intentionally overexposed, in order to improve visibility of Jupiter's twilight zone.
Also, Io's night side is better visible in the TDI 6 image #066.

Departure sequence is pending.

Posted by: Sean May 30 2018, 01:43 PM

PJ13_40
https://flic.kr/p/26zyWw3

5 image composite. Reprojections of 41, 42, 43, 44 on 40. LOTS of photoshoppery to blend different exposures.

Posted by: Gerald May 31 2018, 02:48 AM

SeŠn's composite nicely shows the STB Spectre.

http://junocam.pictures/gerald/uploads/20180531/.

Posted by: Bjorn Jonsson Jun 3 2018, 09:26 PM

Here are my versions of image PJ13_27 ("North North North Temperate Belt"). Approximately true color/contrast:



And enhanced versions:




The subspacecraft latitude is ~40 degrees north; areas near near this latitude have been especially photogenic since Juno's arrival. Because the perijove point has been moving farther north as the mission progresses, the image resolution in this area is now somewhat higher than it was earlier in the mission.

For this image, lossless compression (Huffman) was used. The most obvious difference this makes is in the blue channel images which are always significantly darker than the red and green ones. The enhanced images are also free from the spurious 'contouring' that is sometimes visible in low contrast areas in images containing compression artifacts.

An interesting-looking feature is visible not far from the right edge at ~(1325,1120) in the 'central' image. In enhanced versions of PJ13_27 that I saw shortly after the flyby it seemed to me that this might be a big, dark and very long cloud shadow. However, this is an illusion. Closer inspection, especially in images without exaggerated contrast, reveals that this is simply a dark cloud of the same (or similar) color as several nearby features. Also it turns out that the sun is ~40 degrees above the horizon at this location, i.e. no long shadows at this location. Here is an enlarged crop from the true color/contrast image, centered on this feature:



A subset of the image metadata:

IMAGE_TIME = 2018-05-24T05:31:00.639
MISSION_PHASE_NAME = PERIJOVE 13
PRODUCT_ID = JNCE_2018144_13C00027_V01
SPACECRAFT_ALTITUDE = 7922.7 km
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = 40.6834
SUB_SPACECRAFT_LONGITUDE = 15.2981
TITLE = PJ13 North North North Temperate Belt
Resolution at nadir: ~5.5 km/pixel

Posted by: Gerald Jun 6 2018, 07:35 PM

https://youtu.be/F-O2BjNtOt0.

This time, I've implemented and applied a filter to reduce the number of bright blips caused by energetic particle hits.

I'm going to prepare MP4 scenes and stills for upload.

Posted by: Gerald Jun 7 2018, 12:15 AM

http://junocam.pictures/gerald/uploads/20180607/.

Posted by: Sean Jun 7 2018, 08:32 PM

Perijove 13
https://flic.kr/p/27UDXxN

https://youtu.be/9WctV1QgbMc

Re-timed / gamma / masked blends / sharpen based on Gerald's source.

Music by Jůhann Jůhannsson.

Posted by: Bjorn Jonsson Jun 10 2018, 12:07 AM

Here are my versions of image PJ13_44, mainly processed to test a new version of my software. Everything seems to work as planned. Approximately true color/contrast and an enhanced version:



And a metadata subset:

IMAGE_TIME = 2018-05-24T06:21:08.178
MISSION_PHASE_NAME = PERIJOVE 13
PRODUCT_ID = JNCE_2018144_13C00044_V01
SPACECRAFT_ALTITUDE = 53567.6 km
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = -63.4397
SUB_SPACECRAFT_LONGITUDE = 64.0456
TITLE = PJ13 Jet S6
Resolution at nadir: ~37 km/pixel

Posted by: Bjorn Jonsson Jun 16 2018, 12:12 AM

Here are two rather unusual images showing details from PJ13_31. The images show Jupiter's blue sky at the limb. They have been enlarged by a factor of 3 relative to the original data to show the blue sky more clearly. Color/contrast is approximately natural but the brightness of the blue sky at the limb has been increased slightly relative to other parts of the images. These images should be pretty accurate since I couldn't see any errors in the several framelets I checked with limb fits when processing the data (accurate limb fits are a bit difficult in these hi-res images though because the limb is rather fuzzy). In these images the resolution at the limb is ~4 km/pixel (the resolution of the original data at the limb is ~13 km/pixel).


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