Juno Perijove 61, May 12, 2024 |
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Juno Perijove 61, May 12, 2024 |
 May 14 2024, 03:57 AM
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#1
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Member  Group: Members Posts: 432 Joined: 18-September 17 Member No.: 8250  |
PJ61 Initial downlink images. Data acquired Sunday 5/12.
Natural-ish color/contrast.
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May 14 2024, 03:45 PM
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
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May 14 2024, 04:23 PM
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
And a cylindrical projection of the NTB using PJ61-125, 127, 129, & 131.
 Jupiter NTB - PJ61-125/127/129/131 |
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May 15 2024, 10:55 PM
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
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May 18 2024, 02:22 AM
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 IMG to PNG GOD Group: Moderator Posts: 2256 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Approximately true color/contrast and enhanced images processed from raw image PJ61_137. Long and fairly prominent haze bands are visible in the enhanced versions.
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May 19 2024, 05:39 PM
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#6
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Member Group: Members Posts: 432 Joined: 18-September 17 Member No.: 8250 |
Question for anyone doing raw processing that does not use my flat-field/gains.
Does the color of the charismatic storm appearing in PJ61_133 through PJ61_137 change between images? (For me is particularly noticeable in b* channel of L*a*b* color values in contrast stretched images.) |
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May 20 2024, 03:31 PM
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#7
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
QUOTE (Brian Swift @ May 19 2024, 01:39 PM)  Question for anyone doing raw processing that does not use my flat-field/gains. Does the color of the charismatic storm appearing in PJ61_133 through PJ61_137 change between images? (For me is particularly noticeable in b* channel of L*a*b* color values in contrast stretched images.) For me, it lightens slightly relative to the surroundings, but otherwise the hue remains the same. |
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May 21 2024, 02:36 AM
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#8
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Member Group: Members Posts: 432 Joined: 18-September 17 Member No.: 8250 |
QUOTE (Kevin Gill @ May 20 2024, 08:31 AM) For me, it lightens slightly relative to the surroundings, but otherwise the hue remains the same. Thanks, sometime I'll review/redo my flat-field/gains to ensure they aren't adding an across-spin hue shift. |
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May 21 2024, 04:23 AM
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#9
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Member Group: Members Posts: 432 Joined: 18-September 17 Member No.: 8250 |
PJ61 what's been downlinked so far, exaggerated color/contrast.
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Jul 8 2024, 03:50 AM
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#10
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Member Group: Members Posts: 432 Joined: 18-September 17 Member No.: 8250 |
Anyone else notice what appear to be a few pixels with missing high order bits in the raw png files?
These appear as single noticeably dark pixels in bright areas. For example in JNCE_2024133_61C00137_V01-raw.png they are at locations {{554, 3791}, {707, 4331}, {1069, 6634}, {1547, 8205}, {1056, 10767}} (+/- 1). Circled in read in this image:
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Jul 8 2024, 04:31 AM
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#11
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Senior Member Group: Members Posts: 2547 Joined: 13-September 05 Member No.: 497 |
QUOTE (Brian Swift @ Jul 7 2024, 08:50 PM) Anyone else notice what appear to be a few pixels with missing high order bits in the raw png files? Good catch, I hadn't noticed them. These could easily be bit flips in the DRAM that stores the images temporarily before they are sent to the spacecraft. I'm a little surprised these haven't shown up before, but I haven't really been looking. No bad checksums or anything in this image, so the error has to be upstream of all that processing. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 8 2024, 05:31 AM
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#12
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Member Group: Members Posts: 432 Joined: 18-September 17 Member No.: 8250 |
QUOTE (mcaplinger @ Jul 7 2024, 08:31 PM) These could easily be bit flips in the DRAM that stores the images temporarily before they are sent to the spacecraft. I'm a little surprised these haven't shown up before, but I haven't really been looking. I just noticed them in PJ62 data, checked PJ61 and found them, but haven't seen them in PJ60. |
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Jul 8 2024, 02:49 PM
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#13
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Senior Member Group: Members Posts: 2547 Joined: 13-September 05 Member No.: 497 |
QUOTE (Brian Swift @ Jul 7 2024, 10:31 PM) I just noticed them in PJ62 data, checked PJ61 and found them, but haven't seen them in PJ60. There's no EDAC on the DRAM, so it's always been subject to bit flips, although the images are typically resident for a couple of minutes. Hopefully this is just a sign of increased particle flux and not some kind of developing problem in the electronics. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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