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mcaplinger
The first batch of PJ13 images have been posted to missionjuno.
mcaplinger
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.
Gerald
PJ13, Part 1, RGB drafts.
Gerald
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.
Sean
Here is an early pass using Brian Swift's pipeline...


PJ13_29


PJ13_28


PJ13_27


PJ13_26


PJ13_25


PJ13_24


PJ13_23


PJ13_21


Gerald
This was faster than I could do my uploads.

Here my reprojections, JPG versions:
#029:
Click to view attachment
Gerald
#028:
Click to view attachment
Gerald
#27:
Click to view attachment
Gerald
#026:
Click to view attachment

#025:
Click to view attachment
Gerald
#024:
Click to view attachment
Gerald
#023:
Click to view attachment
Sean
And now for Gerald's...

PJ13_27






mcaplinger
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.)
Gerald
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 with a higher resolution.
Sean
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...


PJ13_25




PJ13_26




Sean
PJ13_27 4k Wallpaper






PJ13_28




PJ13_29


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

Then I fell asleep during upload.
But eventually, here the drafts, and the reprojected PNG versions of part 2.

And here the JPGs of the reprojected versions:
#30, and #31:
Click to view attachment Click to view attachment
Gerald
#35, and #36:
Click to view attachment Click to view attachment
Gerald
#37, and #38:
Click to view attachment Click to view attachment
Gerald
#40, #41, and #42:
Click to view attachment Click to view attachment Click to view attachment
Gerald
And finally #49, and #50, taken with TDI 3 in order to improve the visibility of the terminator:
Click to view attachment Click to view attachment
Sean
I'm glad you got some sleep at least... Jupiter never sleeps! smile.gif
Sean
Gerald's PJ13 sequence...


Full size version on Gigapan...




avisolo
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 Eichstädt / Avi Solomon
Sean
12 Perijoves

262 images

3,593 megapixels

1 Jupiter






Sean
PJ13_42 using Brian's pipeline...



Gerald
PJ-13, part 3, RGB drafts and reprojections to respective image stop time.

#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.
Sean
PJ13_40


5 image composite. Reprojections of 41, 42, 43, 44 on 40. LOTS of photoshoppery to blend different exposures.
Gerald
Seán's composite nicely shows the STB Spectre.

Here PJ13 departure RGB drafts.
Bjorn Jonsson
Here are my versions of image PJ13_27 ("North North North Temperate Belt"). Approximately true color/contrast:

Click to view attachmentClick to view attachmentClick to view attachment

And enhanced versions:

Click to view attachmentClick to view attachmentClick to view attachment

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:

Click to view attachment

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
Gerald
Perijove-13 flyby HD movie is online on YouTube.

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.
Sean
Perijove 13


2k60 version on Youtube

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

Music by Jóhann Jóhannsson.
Bjorn Jonsson
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:

Click to view attachmentClick to view attachment

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
Bjorn Jonsson
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).

Click to view attachmentClick to view attachment
Bjorn Jonsson
Here are my versions of image PJ13_31 (Hot Spot) which is a a very high resolution image. Approximately true color/contrast:

Click to view attachmentClick to view attachmentClick to view attachment

And enhanced versions that have among other things been sharpened with an unsharp mask where the mask radius gets smaller near the horizon:

Click to view attachmentClick to view attachmentClick to view attachment

Due to JunoCam's wide field of view (~58°), the resolution of the high resolution images can vary a lot across the field of view, unlike typical images from narrow angle cameras. The 'image' below shows how the resolution varies in one of the above images. It is computed/rendered at lower resolution than the images above and therefore appears a bit crude. Only the distance is taken into account when computing the resolution (for example the highly oblique viewing angle near the horizon is not included, doing so would result in lower resolution).

Click to view attachment

And some metadata. Note that the resolution at the nadir point is ~2.5 km/pixel.

IMAGE_TIME = 2018-05-24T05:43:08
MISSION_PHASE_NAME = PERIJOVE 13
PRODUCT_ID = JNCE_2018144_13C00031_V01
SPACECRAFT_ALTITUDE = 3685.5 km
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = 6.5491
SUB_SPACECRAFT_LONGITUDE = 27.2725
TITLE = PJ13 Hot Spot
Resolution at nadir: ~2.5 km/pixel
Gerald
Links to a somewhat preliminary version of partial PJ13 maps:

RGB maps and
CH4 maps.

Especially the maps derived from images taken during departure s/c ops will require a revision.
Sean
PJ13_37 based on Matt Brealey's updated pipeline...





Sean


Click this link to see the animation...
PJ13 8 frame animation

Approx 5 minutes between frames lasting 35 minutes

Sean
I give Jupiter a '10'







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