Juno Perijove 21, July 21, 2019 |
Juno Perijove 21, July 21, 2019 |
 Jul 23 2019, 11:28 PM
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#1
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Member  Group: Members Posts: 411 Joined: 18-September 17 Member No.: 8250  |
Collage of PJ21 initial downlink images. Full rez 13902x9218 8-bit JPG available on flickr. 16-bit PNG uploaded to missionjuno.
 Junocam PJ21 Preliminary Download Collage
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Jul 23 2019, 11:41 PM
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#2
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Member Group: Members Posts: 411 Joined: 18-September 17 Member No.: 8250 |
Mike, is there an explanation for the occasional missing frame seen at the beginning of some of the "wide" (~180º spin) raw images?
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Jul 24 2019, 01:56 AM
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#3
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
A couple of angry looking storms visible
 Jupiter - PJ21-17 - Detail  Jupiter - PJ21-18 - Detail  Jupiter - PJ21-19 - Detail |
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Jul 24 2019, 03:58 AM
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#4
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
QUOTE (Brian Swift @ Jul 23 2019, 03:41 PM)  Mike, is there an explanation for the occasional missing frame seen at the beginning of some of the "wide" (~180º spin) raw images? Looks to me like our ground data system didn't command quite enough frames to catch the top limb of the planet in the red channel -- maybe it incorrectly assumes there can't be more than 40 frames in a nadir-centered image, which due to roundoff is not quite true. I'll take a look at it. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 24 2019, 11:34 PM
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 IMG to PNG GOD Group: Moderator Posts: 2251 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This is a preliminary map-projected version of image PJ21_26. The Great Red Spot in on the limb in the original raw image, therefore a part of it is 'missing' here and Jupiter's sky is visible with huge vertical exaggeration. Approximately true color/contrast.
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Jul 25 2019, 12:58 AM
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#6
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
Be patient, the GRS views get better. We're still having some data dropout problems, I'd expect another push of images tomorrow.
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 25 2019, 08:26 PM
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#7
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
Nearly all of the PJ21 images are on missionjuno now -- one image is still partial AFAIK.
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 25 2019, 10:01 PM
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#8
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
Ah, Juno got nice view of the Great Red Spot. Some preliminary processing of it:
 Jupiter - PJ21-36  Jupiter - PJ21-32/36/39/40 |
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Jul 26 2019, 02:41 AM
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#9
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
A couple composite views:
JNCE_2019202_21C00010_V01 JNCE_2019202_21C00012_V01 JNCE_2019202_21C00013_V01 JNCE_2019202_21C00014_V01 JNCE_2019202_21C00015_V01:  Jupiter - Perijove 21 - Composite JNCE_2019202_21C00015_V01 JNCE_2019202_21C00017_V01:  Jupiter - PJ21-15/17 JNCE_2019202_21C00014_V01 JNCE_2019202_21C00015_V01 JNCE_2019202_21C00017_V01 JNCE_2019202_21C00018_V01 JNCE_2019202_21C00019_V01:  Perijove 21 - Composite JNCE_2019202_21C00032_V01 JNCE_2019202_21C00036_V01 JNCE_2019202_21C00039_V01 JNCE_2019202_21C00040_V01 JNCE_2019202_21C00041_V01 JNCE_2019202_21C00042_V01 JNCE_2019202_21C00043_V01 JNCE_2019202_21C00044_V01 JNCE_2019202_21C00045_V01:  Jupiter - Perijove 21 |
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Jul 26 2019, 02:23 PM
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#10
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Member Group: Members Posts: 923 Joined: 10-November 15 Member No.: 7837 |
PJ21_16 [GE/SD]
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Jul 26 2019, 05:57 PM
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#11
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
QUOTE (Kevin Gill @ Jul 25 2019, 02:01 PM) Ah, Juno got nice view of the Great Red Spot. Some preliminary processing of it... Beautiful work as always, Kevin. Interesting to compare this to what Damien Peach saw back in June -- http://damianpeach.com/jup19/2019-06-03-0500_3-RGBdp.jpg -- doesn't look all that different except that scalloped stuff to the east seems to have smoothed out. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 26 2019, 07:29 PM
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#12
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
QUOTE (mcaplinger @ Jul 26 2019, 01:57 PM) Beautiful work as always, Kevin. Interesting to compare this to what Damien Peach saw back in June -- http://damianpeach.com/jup19/2019-06-03-0500_3-RGBdp.jpg -- doesn't look all that different except that scalloped stuff to the east seems to have smoothed out. Well, it's interesting... In not-very-scientific measurements from Perijoves 7, 12, 18, & 21, there appears to be a measurable longitudinal shrinking of the GRS: Perijove 7: 16,094 km
Perijove 12: 15,898 km
Perijove 18: 15,627 km
Perijove 21: 15,149 km
With a linear decline in width up to Perijove 18, then a sharper decline to Perijove 21 which matches the timing of the detachments observed by Damien Peach. |
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Jul 26 2019, 11:27 PM
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#13
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IMG to PNG GOD Group: Moderator Posts: 2251 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
QUOTE (mcaplinger @ Jul 25 2019, 08:26 PM) Nearly all of the PJ21 images are on missionjuno now -- one image is still partial AFAIK. I noticed that there is no image number 33 at the MissionJuno website. Is that the one that is still partial? If there is an image number 33 that's actually probably a very interesting image that should show areas north and/or west of the GRS very well. QUOTE (Kevin Gill @ Jul 26 2019, 07:29 PM) With a linear decline in width up to Perijove 18, then a sharper decline to Perijove 21 which matches the timing of the detachments observed by Damien Peach. Something comparable has also been measured from ground based images, see http://alpo-j.asahikawa-med.ac.jp/kk19/j190624r.htm and http://pianeti.uai.it/index.php/Jupiter:_2019_Animated_gif |
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Jul 27 2019, 04:13 PM
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#14
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
QUOTE (Bjorn Jonsson @ Jul 26 2019, 03:27 PM) I noticed that there is no image number 33 at the MissionJuno website. Is that the one that is still partial? If there is an image number 33 that's actually probably a very interesting image that should show areas north and/or west of the GRS very well. Correct. Image 33 taken 04:32:27. The dropout is small but goes right across the GRS in one channel (of course.) I'd expect it to be pushed by mid-week next week one way or another. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 29 2019, 08:09 PM
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#15
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
QUOTE (mcaplinger @ Jul 27 2019, 08:13 AM) I'd expect it to be pushed by mid-week next week one way or another. The last image from PJ21 is on missionjuno now. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 29 2019, 09:18 PM
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#16
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IMG to PNG GOD Group: Moderator Posts: 2251 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
QUOTE (mcaplinger @ Jul 29 2019, 08:09 PM) The last image from PJ21 is on missionjuno now. Awesome - thanks. This image is even more interesting/better than I was expecting it to be. |
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Jul 30 2019, 04:59 PM
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#17
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
A quick GRS and Areas West map view using the '33 data:
Uses: JNCE_2019202_21C00033_V01, JNCE_2019202_21C00036_V01, JNCE_2019202_21C00039_V01  Jupiter - Great Red Spot - PJ21-32/33/36 |
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Jul 30 2019, 09:02 PM
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#18
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
And a fish-eye marble view of areas west of the GRS.
Uses: JNCE_2019202_21C00032_V01 JNCE_2019202_21C00033_V01 JNCE_2019202_21C00036_V01 JNCE_2019202_21C00039_V01 JNCE_2019202_21C00040_V01 JNCE_2019202_21C00041_V01 JNCE_2019202_21C00042_V01  Jupiter - Perijove 21 - GRS Composite |
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Aug 6 2019, 10:34 PM
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#19
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Member Group: Members Posts: 411 Joined: 18-September 17 Member No.: 8250 |
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Aug 8 2019, 03:32 PM
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#20
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 Senior Member Group: Members Posts: 2090 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Just for comparison, a lovely Hubble view (taken June 27) has been released:
https://spacetelescope.org/images/heic1914a/ |
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Aug 13 2019, 10:49 PM
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#21
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IMG to PNG GOD Group: Moderator Posts: 2251 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
I posted a PJ21 Great Red Spot (GRS) mosaic in a different thread which also contains GRS mosaics from earlier perijoves. A bigger version of the mosaic covering a bigger area can be found at the Juno website.
Below are enhanced images showing specific features from the mosaic. The first one shows the convective storms west and northwest of the GRS. It has been processed to reveal subtle features within the very bright convective feature northwest of the GRS. The second one shows the STB spectre.
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Aug 19 2019, 05:55 AM
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#22
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Member Group: Members Posts: 411 Joined: 18-September 17 Member No.: 8250 |
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Oct 17 2019, 11:18 PM
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#23
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Member Group: Members Posts: 144 Joined: 22-July 14 Member No.: 7220 |
PJ21 Flyover video. Certainly not perfect. Motion tracks spice data, but camera rotation does not.
 Jupiter - Perijove 21 in One Minute And on YouTube @ 4K: https://www.youtube.com/watch?v=KhG5nXJLW4M |
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