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mcaplinger
Posted on: Oct 14 2013, 08:52 PM


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We're received 13 of 17 EFB images in their entirety and I'm working on posting them to the web site. Still some annoying gaps in the last 4, but better than what you've seen so far.
  Forum: Juno · Post Preview: #203798 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 12 2013, 05:38 AM


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QUOTE (Gerald @ Oct 11 2013, 10:03 PM) *
A first draft of the efb12 image fragments...

Very nice! This confirms my suspicions that there wasn't any region that managed to get full RGB coverage. In areas where you have two colors, it might work to synthesize the third using the old G=( R+B )/2 trick. It'd also be nice to move the bottom to the top and get rid of all the black in between.

Of course only if you're interested; I'm hoping that we'll have clean data in a few days.
  Forum: Juno · Post Preview: #203770 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 12 2013, 01:57 AM


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Aviation Week is reporting "NASA's Jupiter bound Juno probe exited safe mode late Friday.
The exit occurred at 5:12 p.m., EDT, according to a statement from the Southwest Research Institute of San Antonio..."

We still have lots of small gaps in our image data that makes decompression problematic. For the motivated among you, I've put an example on our web site at http://www.msss.com/junocam_efb/images/efb12x.jpg -- this is the RGB image with the best geometry and least compression. I'd be curious how well it can be reassembled. Hopefully we'll have all of the data down by early next week; the spacecraft team is taking a well-deserved rest over the weekend.
  Forum: Juno · Post Preview: #203768 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 11 2013, 05:09 PM


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QUOTE (JRehling @ Oct 11 2013, 09:39 AM) *
It would certainly be fun if the CH4-band images showed dark spots where large cattle farms exist.

Only about 20% of atmospheric CH4 is from cattle. I doubt that this imaging is sensitive enough to see any terrestrial variation in CH4, which is only on the order of a few tenths of PPM at the surface based on http://en.wikipedia.org/wiki/Atmospheric_methane -- but I haven't done any analysis to back this up.
  Forum: Juno · Post Preview: #203764 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 11 2013, 01:10 AM


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QUOTE (Bjorn Jonsson @ Oct 10 2013, 05:06 PM) *
The biggest uncertainty now is exactly how to correct the geometric distortion...

The last set of simulations on the website were generated using a first-order radial distortion model of the lens and the actual line coordinates of the filter readout areas (slightly different than what's in the instrument I kernel; I didn't get a chance to update that.) Of course the agreement between simulation and reality isn't perfect.

QUOTE
The Junocam lens has low distortion (less than 3% at the field
corners, primarily barrel distortion.) Low distortion was needed so
that TDI could be employed. Because of this, Junocam can be modeled
to first order using a simple f tan(theta) pinhole camera model. This
can be further improved by adding one radial distortion term K1
following the formulation of [Brown, Duane C. (May 1966). "Decentering
distortion of lenses". Photogrammetric Engineering. 32 (3): 444-462]
of value 3.839251e-8. Measured focal length was 10.997 mm.

  Forum: Juno · Post Preview: #203746 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 10 2013, 11:53 PM


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I put the partial for efb14 on the website. If you stretch it up, there's something there -- maybe somebody who knows South African geography can say what it is.
  Forum: Juno · Post Preview: #203743 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 10 2013, 11:22 PM


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I've put the partial image for efb09 (ch4) out on the website. I wish I had some RGB images people could play with, but there are too many drops in them so far to be of much use.
  Forum: Juno · Post Preview: #203741 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 10 2013, 10:32 PM


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QUOTE (vjkane @ Oct 10 2013, 03:22 PM) *
Does receiving images mean Juno is out of safe mode?

If it can send images, I don't care if it's in safe mode or not. smile.gif
  Forum: Juno · Post Preview: #203739 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 10 2013, 06:38 PM


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There are a couple of Earth images up now. Unfortunately we had a lot of dropouts in the downlink that will have to be recovered later; it should all still be there but you'll have to be patient.
  Forum: Juno · Post Preview: #203728 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 10 2013, 06:03 PM


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I can't parse this. We never sent the data in raw form, but lossless compression means you decompress them and then they're in raw form. This is as close to raw as will ever be released.
The RDR DXXX product is essentially raw.
  Forum: MSL · Post Preview: #203727 · Replies: 24 · Views: 24462

mcaplinger
Posted on: Oct 10 2013, 04:11 PM


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QUOTE (djellison @ Oct 10 2013, 05:50 AM) *
Grab a tub of cornflower...

For the Americans among us, Doug is talking about cornstarch. smile.gif
  Forum: MSL · Post Preview: #203724 · Replies: 258 · Views: 162277

mcaplinger
Posted on: Oct 9 2013, 10:59 PM


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AP is reporting that Juno is in safe mode. http://hosted.ap.org/dynamic/stories/U/US_...-10-09-18-14-23

Better information from Emily: http://www.planetary.org/blogs/emily-lakda...-safe-mode.html I'll add there is reason to be optimistic that we got at least some of the Junocam sequence.
  Forum: Juno · Post Preview: #203709 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 9 2013, 09:18 PM


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QUOTE (Lightning @ Oct 9 2013, 02:11 PM) *
According to the latest data (up to my knowledge) ...
So this still are not raw images.

The latest is release 3 for sols 180-269: http://pds-imaging.jpl.nasa.gov/data/msl/M...R/SURFACE/0000/

Looks like lossless to me.
  Forum: MSL · Post Preview: #203705 · Replies: 24 · Views: 24462

mcaplinger
Posted on: Oct 9 2013, 07:23 PM


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We're between DSN tracks right now. The last one lasted until about 12:07 PDT but we didn't get any images back from it.
  Forum: Juno · Post Preview: #203701 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 9 2013, 12:57 PM


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QUOTE (Adam Hurcewicz @ Oct 9 2013, 05:52 AM) *
Here is my version of
Image 1: Moon color

Nice. Now tweak the color balance until it looks gray and save the coefficients to use for the Earth images later.
  Forum: Juno · Post Preview: #203694 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 9 2013, 11:59 AM


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What, nobody else is awake?

I'm having a bit of trouble generating the thumbnails but the full-res Moon images are up now; they were downlinked much faster than expected.
  Forum: Juno · Post Preview: #203687 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 9 2013, 03:18 AM


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Just a little taste of what I have on my RAMPAGE (that's Remote Access Multi-mission Processing and Analysis Ground Environment -- see http://trs-new.jpl.nasa.gov/dspace/bitstre...3/1/99-1960.pdf ) display at the moment:

Attached Image
  Forum: Juno · Post Preview: #203680 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 8 2013, 11:03 PM


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That happened quite a while ago, though I guess I'm not certain they've been released to PDS (but I think so.)
  Forum: MSL · Post Preview: #203678 · Replies: 24 · Views: 24462

mcaplinger
Posted on: Oct 8 2013, 01:26 PM


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Many reasons, but mostly because it's old news at this point so there's little urgency, the approval process for us to release something is not completely straightforward, and there's some hope that the product could be improved -- for one thing, by inclusion of unreleased EDL telemetry as a graphic overlay or something.

Recall that the final Huygens descent movie wasn't released for something like 5 years after the event.
  Forum: MSL · Post Preview: #203666 · Replies: 24 · Views: 24462

mcaplinger
Posted on: Oct 7 2013, 09:36 PM


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http://missionjuno.swri.edu/media-gallery now has a link to the MSSS web page. You may want to check that out for more information.
  Forum: Juno · Post Preview: #203659 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 7 2013, 05:54 PM


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QUOTE (AdrianC @ Oct 7 2013, 10:04 AM) *
This is no easy task, my estimate is about 40-100 hours of work minimum and lots of data missing.

At MSSS I've considered doing something similar, but I think this is an underestimate of the level of effort required, and IMHO perhaps past the point of diminishing returns. We have a better-interpolated version of the sequence than anything I've seen on youtube (but still done with optical flow), but I'm not sure when or if it will be released.

You will also find that the terminal descent part of the sequence, with its dust and flying rocks, is a completely different problem than the rest of the sequence (and managing the heat shield is also pretty different.)
  Forum: MSL · Post Preview: #203652 · Replies: 24 · Views: 24462

mcaplinger
Posted on: Oct 5 2013, 04:47 PM


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QUOTE (Gerald @ Oct 5 2013, 07:27 AM) *
Proper modeling will take some more time.

That looks pretty good, about as good as our quick-look product. Note that the C kernel file needed for complete geometric processing is built from spacecraft telemetry and there may be some lag in its production (though the team is going to try to produce it as soon as possible after EFB.) The simulation C kernels on the NAIF website are likely quite accurate with regard to the pointing of the spin axis and the spin rate, but the spin phase can't be predicted in advance very well. You could imagine a processing flow that would use the C kernel for everything but spin phase and compute the latter by other means, but I was disinclined to write that code. Between that and the fact that the exact position of the filter strips, the distortion of the optics, etc, have not yet been documented (I'll try to do that to some level on Monday), you will probably be better off using a more ad hoc method to register the color bands, at least in the short term.
  Forum: Juno · Post Preview: #203626 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 5 2013, 12:39 AM


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QUOTE (mcaplinger @ Oct 3 2013, 07:09 PM) *
I expect that http://missionjuno.swri.edu/earth-flyby will be updated at some point...

http://missionjuno.swri.edu/media-gallery now contains a little information about the Junocam EFB images and says that all of the images will be posted there on October 10th.

To give a bit more detail than that site has: the Junocam EFB activity is split up into four categories: Moon imaging, dayside Earth imaging, nightside Earth imaging, and other imaging. The Moon imaging happens first, at about 4 AM PDT on October 9. Since Juno will be fairly far from the Moon, it will be very small in these images (about 30 pixels across.) The dayside Earth imaging starts at about noon PDT and lasts about 20 minutes until the spacecraft passes from day to night. In this segment, we expect to see South America and the southern Atlantic Ocean. Now over the nightside, the spacecraft makes its closest approach over southern Africa, and we will take three images trying to see the lights of the major cities of South Africa, the islands of Reunion and Mauritius east of Madagascar, and finally, the nightside limb of the Earth at about 12:30. The last image of the sequence is a dark image looking for radiation effects as Juno passes through the inner Van Allen radiation belt surrounding the Earth. There are 17 images total, 6 RGB and 11 monochrome in various bands.
  Forum: Juno · Post Preview: #203618 · Replies: 597 · Views: 607347

mcaplinger
Posted on: Oct 4 2013, 05:04 PM


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QUOTE (Ron Hobbs @ Oct 4 2013, 09:49 AM) *
I particularly noted the last sentence: "Although work has begun again on the project, the scientists and engineers involved, who are now working overtime, are not receiving any pay."

Unless the situation is different than I believe it is, the vast majority of people working on MAVEN are either LM employees or JPL employees, and their pay shouldn't be affected by the shutdown.
  Forum: MAVEN · Post Preview: #203612 · Replies: 80 · Views: 168547

mcaplinger
Posted on: Oct 4 2013, 02:09 AM


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Juno Earth flyby is less than six days away; closest approach is about 19:22 UT on 9 Oct, or 22 minutes past noon PDT.

The main NASA site http://www.nasa.gov/mission_pages/juno/earthflyby.html which had the best information is unavailable. I expect that http://missionjuno.swri.edu/earth-flyby will be updated at some point, but at the moment, there's not much content. We are set up at MSSS to send them the processed Junocam image data shortly after we receive it ourselves, but I don't know how much time they ( http://www.radicalmedia.com/Design__and__T...Digital/#/44572 ) will take to turn that around, and we are not currently authorized to make our link public (sigh).

The ham radio project is still up at http://www.jpl.nasa.gov/hijuno/

For the moment, http://www.lpi.usra.edu/opag/jul2013/prese...lans.pdf‎ is probably the best source of information that's still accessible.

If I learn anything else, I'll post it here.
  Forum: Juno · Post Preview: #203600 · Replies: 597 · Views: 607347

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