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djellison
Posted on: Apr 7 2021, 05:05 AM


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QUOTE (MahFL @ Apr 6 2021, 09:49 PM) *
A stone seems to be stuck onto the wheel


Are you talking about that Watson sensor crud that's in every Watson image?
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251435 · Replies: 309 · Views: 147498

djellison
Posted on: Apr 7 2021, 02:05 AM


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QUOTE (charborob @ Apr 6 2021, 06:23 PM) *
Scoor and Garve


Yeah - they got used by accident but it was too late to go and get them changed. It's not really a big deal, they're only informal names after all.
  Forum: MSL · Post Preview: #251430 · Replies: 2243 · Views: 2182913

djellison
Posted on: Apr 6 2021, 09:10 PM


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Several MSL team members put a paper together for IEEE Big Sky this year - and I just asked the JPL Library to put it out on the JPL Tech Report server. It details the transition to remote ops and how things have changed.

Commanding Curiosity from the couch: MSL remote operations, challenges, and path ahead
  Forum: MSL · Post Preview: #251426 · Replies: 990 · Views: 555597

djellison
Posted on: Apr 5 2021, 03:18 PM


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Yeah - the landing ellipse is almost certainly larger than that entire image.
  Forum: Tianwen 1- 2020 Orbiter/Lander · Post Preview: #251395 · Replies: 102 · Views: 104933

djellison
Posted on: Apr 5 2021, 05:31 AM


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4 NCAM subframes each at 2x2 downsampled. I suspect this is the res we will see most of the time for drive direction Navcam images.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251383 · Replies: 818 · Views: 437256

djellison
Posted on: Mar 31 2021, 07:42 PM


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QUOTE (mcaplinger @ Mar 31 2021, 11:09 AM) *
pyro involved.


Looking at the CAD file posted to https://rps.nasa.gov/3D-viewer/ it looks like there's definitely some involved in the chopper - shield deploy for sure, and at least some others around the interface to the rover.

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251306 · Replies: 818 · Views: 437256

djellison
Posted on: Mar 31 2021, 06:18 PM


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QUOTE (MarkL @ Mar 31 2021, 08:55 AM) *
I would imagine they have taken video of each phase of the deployment which would be show smooth rotation of the various components.


There are pyrotechnic devices being fired during these steps. You don't want science cameras pointed at pyro devices when they're going off.


  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251301 · Replies: 818 · Views: 437256

djellison
Posted on: Mar 31 2021, 04:39 AM


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3 frame twilight cloud movie from Sol 3072 over about 15 minutes. It's fair to say ML and I have been having some fun while the twilight cloudy season lasts.

raw frames here : https://mars.nasa.gov/msl/multimedia/raw-im...Asample_type%2C
  Forum: MSL · Post Preview: #251290 · Replies: 990 · Views: 555597

djellison
Posted on: Mar 31 2021, 04:35 AM


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So what you're saying is...Dragonfly has it easy laugh.gif
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251289 · Replies: 818 · Views: 437256

djellison
Posted on: Mar 29 2021, 02:43 PM


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QUOTE (Andreas Plesch @ Mar 28 2021, 09:25 AM) *
Perhaps this sequence was also a test for imaging Ingenuity from the overlook, rapidly and with a wide aspect ratio.


It was 5 x 3 dust devil survey. You don't need wide angle to film Ingenuity - they'll be parked >100m away and it's only going 5m high.

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251263 · Replies: 309 · Views: 147498

djellison
Posted on: Mar 26 2021, 03:40 AM


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There has been no use of autonav so far. There wont be until after the helecopter is deployed. All there has been so far is 'blind' drives. There is little to cause one of those to fault out in terrain like this.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251194 · Replies: 309 · Views: 147498

djellison
Posted on: Mar 11 2021, 06:36 PM


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QUOTE (JohnVV @ Mar 11 2021, 05:07 AM) *
i use Gmic's built in program " bayer2rgb"


I must admit - I've found Gmic's debayer performance to be pretty ugly - especially at the edge of images.

I've been using PIPP which can batch debayer images and I've been very pleased with the results

https://sites.google.com/site/astropipp/
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250868 · Replies: 178 · Views: 141331

djellison
Posted on: Mar 10 2021, 02:09 PM


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If it bounced it would be visible separately from the impact ‘splat’ in the crime scene HiRISE image.....which it isn’t..

I think you’re seeing the dust cloud of impact and its shadow move with the wind. These are 1hz images, so it’s actually pretty slow.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250833 · Replies: 122 · Views: 103950

djellison
Posted on: Mar 10 2021, 12:30 AM


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All of them came down - including a view of the Heatshield impact.

Here's a page of just the LCAM pics, from Ryan's awesome raw browsing interface
https://rkinnett.github.io/roverpics/?mars2...&filter=ELM


(Congrats Mike C - great work from the La Jolla team)
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250815 · Replies: 122 · Views: 103950

djellison
Posted on: Mar 9 2021, 08:35 PM


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The MEDA SkyCam is a repurposed MER/MSL heritage Hazcam. They are INCREDIBLY optically dark. We're tried ( and failed ) to image night time features with MSL NavCams - even Earth and Venus were not visible. You're not going to get much, if anything, astronomical, through the MEDA SkyCam
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250806 · Replies: 178 · Views: 141331

djellison
Posted on: Mar 7 2021, 05:54 PM


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QUOTE (mcaplinger @ Mar 7 2021, 08:36 AM) *
I still call it M2020 and probably always will, just like I still call the earlier mission MSL.


Well yeah - M20 and MSL to differentiate between charge codes, and then 'the rover'
  Forum: Chit Chat · Post Preview: #250688 · Replies: 17 · Views: 15155

djellison
Posted on: Mar 7 2021, 05:52 PM


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QUOTE (HSchirmer @ Mar 7 2021, 08:37 AM) *
On a more serious note, it seems like we've got a good candidate for the first drone imaging target?


Umm.....wrong rover, wrong crater.
  Forum: MSL · Post Preview: #250687 · Replies: 990 · Views: 555597

djellison
Posted on: Mar 7 2021, 03:13 PM


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QUOTE (serpens @ Mar 6 2021, 02:23 PM) *
Not sure about the morphing of Perseverance to Percy.


Then call it Perseverance.

Problem solved.

FWIW - The name ‘Percy’ was adopted by almost everyone I know on the project pretty much immediately after it was announced.

You’re gonna HATE what everyone calls the Helicopter.....so you should probably start getting used to Ginny now.


  Forum: Chit Chat · Post Preview: #250674 · Replies: 17 · Views: 15155

djellison
Posted on: Mar 5 2021, 08:03 PM


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WE'RE DOING IT AGAIN ON SUNDAY biggrin.gif

  Forum: MSL · Post Preview: #250586 · Replies: 990 · Views: 555597

djellison
Posted on: Mar 5 2021, 07:41 PM


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QUOTE (jvandriel @ Mar 5 2021, 11:40 AM) *
R



There ya go smile.gif

(That said - we did this one in stereo because we're so close to it we can get range data biggrin.gif )
  Forum: MSL · Post Preview: #250584 · Replies: 990 · Views: 555597

djellison
Posted on: Mar 4 2021, 09:31 PM


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QUOTE (Phil Stooke @ Mar 4 2021, 01:00 PM) *
Too bad the cliff itself got cut off.


It didn't.

https://mars.nasa.gov/resources/25676/n_r00...tolm2/?site=msl

Jan only uses Navcam left for his mosaics- and much of the time any upper-tier imaging we do is right eye only. It's why I had the script that generates the mosaics that go to https://mars.nasa.gov/msl/multimedia/mosaics swap from left eye to right eye - to catch upper tiers when we take them. Some are taken in stereo - but more often than not - right eye only

(Mono imaging has to be right eye as that camera's electronics box is monitored for temperature by the flight software for heating. Stereo imaging has to be within a window when heating isn't required anyway )
  Forum: MSL · Post Preview: #250538 · Replies: 990 · Views: 555597

djellison
Posted on: Mar 1 2021, 04:43 AM


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The front hazcams have quite a significant toe-out between them. ~20deg.
page 17
See https://www.ncbi.nlm.nih.gov/pmc/articles/P...Article_765.pdf
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250415 · Replies: 178 · Views: 141331

djellison
Posted on: Feb 28 2021, 10:51 PM


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Wow. You have to debayer and then stitch all 16 subframes.....but this is full resolution EECAM FHAZ and RHAZ images.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250404 · Replies: 477 · Views: 263318

djellison
Posted on: Feb 28 2021, 09:46 PM


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QUOTE (neo56 @ Feb 27 2021, 11:50 PM) *
However, I wonder why Mars24 and JSON files refer to LMST rather than LTST?
Local True Solar Time takes into account the equation of time so it's more relevant isn't it?


All rover activities are planned to LMST.
  Forum: MSL · Post Preview: #250401 · Replies: 990 · Views: 555597

djellison
Posted on: Feb 28 2021, 03:16 AM


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QUOTE (scalbers @ Feb 27 2021, 05:31 PM) *
I was able to view this with the "First Person" navigation setting. Next I'm checking to see if it is possible to "walk" at constant eye/camera height.


Using the AR/VR option is should be possible - you might need to install the Sketchfab app to do it though.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250377 · Replies: 477 · Views: 263318

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