Juno Perijove 33, April 16, 2021 |
Juno Perijove 33, April 16, 2021 |
Apr 19 2021, 10:41 PM
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#1
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
The first batch of PJ33 images are down!
Tried running them through my pipeline but it blew up during the ISIS3 cam2map step with the error "**PROGRAMMER ERROR** Angle cannot be a non-Null special pixel." First time I've seen that... |
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Apr 19 2021, 11:19 PM
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#2
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
Just to warn everybody -- owing to various DSN factors, it may be a while before the rest of PJ33 shows up.
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Apr 20 2021, 04:40 PM
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#3
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Member Group: Members Posts: 425 Joined: 18-September 17 Member No.: 8250 |
While we're waiting... Here's my processing of what has been downlinked
Full resolution version available at https://www.missionjuno.swri.edu/junocam/processing?id=10362 |
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Apr 20 2021, 05:06 PM
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#4
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
While we're waiting... Here's my processing of what has been downlinked Full resolution version available at https://www.missionjuno.swri.edu/junocam/processing?id=10362 Beautiful! I want to get at that storm in PJ33-27 & 28 sooo bad! Did you have any spice errors or other issues with this perijove, or is it just me? |
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Apr 20 2021, 06:08 PM
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#5
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Member Group: Members Posts: 425 Joined: 18-September 17 Member No.: 8250 |
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Apr 21 2021, 06:24 PM
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#6
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Senior Member Group: Members Posts: 4256 Joined: 17-January 05 Member No.: 152 |
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Apr 22 2021, 06:22 PM
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#7
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Member Group: Members Posts: 146 Joined: 22-July 14 Member No.: 7220 |
Just to warn everybody -- owing to various DSN factors, it may be a while before the rest of PJ33 shows up. Thanks! Turns out to be an issue with the spice kernels that are off by the ~10 hours. Imagery times appear to be correct. |
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Apr 22 2021, 08:43 PM
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#8
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
Mike, I was wondering if you could check the image times and spacecraft clock values reported in the image metadata. Image 16 is SCLK 671800194:54 or 2021 APR 15 23:03:54.55 and the JSON on missionjuno says "IMAGE_TIME": "2021-04-15T23:03:54.546" so that all seems right to me. We used juno_sc_rec_210414_210416_v01.bc and spk_ref_210111_251021_210111.bsp to do our processing, I believe, and it certainly found Jupiter OK. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Apr 23 2021, 01:11 AM
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#9
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
Turns out to be an issue with the spice kernels that are off by the ~10 hours. Be aware that some of the files on the NAIF website produced before the EM was official will have the old pre-EM orbit, which I expect was the source of your problems. But I'm not sure which are good and which are bad or how this interacts with the ISIS kernel updating process, if that's what you're using. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Apr 23 2021, 03:13 AM
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#10
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
To prepare for the extended mission and maintain the orbit, PJ33 was delayed by exactly one jovian day compared to earlier plans. See https://britastro.org/node/25896
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Apr 23 2021, 05:21 AM
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#11
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Member Group: Members Posts: 425 Joined: 18-September 17 Member No.: 8250 |
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Apr 23 2021, 06:04 AM
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#12
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Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
I don't do a lot of JunoCAM processing, but for Juno visualizations, I maintain a metakernel that I try to update about once a week. I use the following kernels for the spacecraft position:
spk_ref_210111_251021_210111.bsp juno_pred_orbit.bsp juno_rec_orbit.bsp The first is the reference orbit for the extended mission while the other two are regularly updated files covering the predicted orbit through July 20 (at present) and the recorded orbit (through March 21). The latter two files are regularly updated and I just keep those files up-to-date. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Apr 23 2021, 06:27 AM
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#13
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
spk_ref_210111_251021_210111.bsp... is the reference orbit for the extended mission... One problem is that this file (which we also use, see above) isn't on the NAIF web site at present, we've asked that it be put back up. The older ref files are, I think, wrong (as one would expect.) Using the rec or later pre files should be safe, I hope. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Apr 23 2021, 08:54 PM
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#14
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
I think all of the PJ33 images are on missionjuno now.
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Apr 23 2021, 11:35 PM
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#15
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Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Thanks for the heads up!
Here's the Io image from 33C00045: No plumes apparent, though Chalybes would be on the bright limb at upper left. Chalybes had been cooling down in late 2019/early 2020 so it may not have an active plume at present. No known plume sources on the terminator, so the lack of a plume is not entirely surprising... I will leave it to others to tease out and process the grouping of three Galilean moons in that image. Europa is the smaller half-moon to the left of Io and Callisto is even smaller, and darker, between the two and maybe a half a framelet down. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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