Juno perijove 27, June 2, 2020 |
Juno perijove 27, June 2, 2020 |
Jun 7 2020, 10:47 PM
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Many (but not all) of the images from perijove 27 are now available. This is image PJ27_36 in approximately true color/contrast and enhanced versions:
North is to the left in the last two images but in the other images north is up. An interesting feature in the last image is the long, narrow and slightly wavy red band running from upper right down to the bottom of the image a bit left of center (it is also visible in the true color/contrast version but it's not as conspicuous there). The visual impression is that this is transparent, reddish haze and that the clouds below the haze band can be seen through the haze. It will be interesting to see what's happening farther west (down in the image) but the images showing this are not yet available at the time of this writing. The enhanced images are a bit experimental. Compared to what I usually do, I'm using a somewhat different method to increase the contrast and exaggerate color differences. Also I'm now using DeNoise AI from Topaz Labs to reduce noise and sharpen the images. This is an awesome tool in most cases but one must be careful not to overprocess the images. There are also some 'types' of images where it doesn't work well - I tried using it to process a very noisy grayscale Galileo image of Europa with horrible results. But I've been getting great results so far with the JunoCam images - far better than in e.g. Photoshop. |
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Jun 8 2020, 02:00 AM
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Senior Member Group: Members Posts: 2516 Joined: 13-September 05 Member No.: 497 |
Many (but not all) of the images from perijove 27 are now available. Just so everyone is aware (I don't remember if we've ever explained this): we process and post the images pretty much as soon as we get them in complete form. Depending on downlink pass quality, we can end up with partial images that have dropped data in them, and these gaps have to be filled in by commanding their retransmission. Usually this process doesn't happen on weekends, but you can expect most or all of these images to show up in the next few days. For PJ27, there are some nice views of the GRS on the outbound leg to look forward to. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jun 8 2020, 05:01 PM
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#3
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Member Group: Members Posts: 140 Joined: 22-July 14 Member No.: 7220 |
For PJ27, there are some nice views of the GRS on the outbound leg to look forward to. Nice shot of the GRS in the one outbound shot that's been posted Jupiter - PJ27-52 The view of the orange/brown streams is striking as well: Jupiter - PJ27-24 Jupiter - PJ27-23/24/25/26 - Detail Further north it's still as crazy as ever: Jupiter - PJ27-19 |
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Jun 9 2020, 10:14 AM
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#4
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
Gorgeous work, both Kevin & Bjorn!
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Jun 12 2020, 10:01 PM
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Member Group: Members Posts: 140 Joined: 22-July 14 Member No.: 7220 |
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Jun 12 2020, 10:40 PM
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This one is awesome. I have been wanting to do something comparable (perhaps a bit more complicated) for some time but first I need to get myself a new computer (may happen in a week or two).
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Jun 18 2020, 12:20 AM
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#7
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Member Group: Members Posts: 406 Joined: 18-September 17 Member No.: 8250 |
Mike, was flight software doing anything "special" for PJ27_40 (Io on limb image)?
The start time offset my limb matching came up for this would be the largest I've seen in the mission. (However, this offset is preliminary since I don't have reconstructed SPK yet, but other offsets didn't seem excessive.) |
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Jun 18 2020, 12:50 AM
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#8
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Senior Member Group: Members Posts: 2516 Joined: 13-September 05 Member No.: 497 |
Mike, was flight software doing anything "special" for PJ27_40 (Io on limb image)? Gee, is that Io? I wonder if we were trying to image that event deliberately? No, nothing special that I know of. We haven't done our timing analysis yet. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jun 18 2020, 02:08 AM
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Member Group: Members Posts: 406 Joined: 18-September 17 Member No.: 8250 |
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Jun 18 2020, 08:53 PM
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This is from image PJ27_40, enlarged by a factor of 4 relative to the original data. Approximately true color/contrast. Io's limb required special processing since Io was very slightly farther from Jupiter's limb when the blue data was obtained than it was when the red data was obtained. The same applied to the green data but the difference was of course smaller. North is down.
Like Brian I saw an unusually big START_TIME offset/error in this particular image. At first I didn't believe it and recomputed/rechecked everything but got the same result. |
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Jun 26 2020, 09:00 PM
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This is a map-projected mosaic of four methane filter images at 30 pixels/degree:
The original images are noisy and contain various artifacts. Here the most conspicuous artifacts have been removed. Many artifacts remain though, in particular many narrow, dark and bright lines. In the white areas no useful data was available. |
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Jun 28 2020, 11:22 PM
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#12
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Member Group: Members Posts: 406 Joined: 18-September 17 Member No.: 8250 |
PJ27 Flyover on YouTube https://youtu.be/lLMlnbCYVoI
Or if you'd like version without YouTube re-encoding, from this google drive link you can download 3840x1600 x.265/HEVC version. https://drive.google.com/file/d/1QUeEzlotqM...3ATovzySLHQo1dq |
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Jul 20 2020, 11:33 PM
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#13
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
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