JunoCam "Marble Movie", July 10 through October 14 |
JunoCam "Marble Movie", July 10 through October 14 |
Aug 22 2016, 11:15 PM
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#46
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Woops, an error crept into my spreadsheet. Sorry...stand by and I'll fix.
...fixed! Thanks for pointing that out. -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 23 2016, 12:06 AM
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#47
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
I've got a similar issue with the moons of Uranus, which are pretty dim compared to the planet, so I might need to enhance them also at some point - maybe some kind of logarithmic brightening (?). A "magic" threshold in the brightness of small/pointlike objects in an image is whether or not the apparent size of the object equals about one pixel. If so, you shouldn't run into any problems with its brightness – the outer planets moons are usually (not always) of albedo comparable to the planet, so if the planet is visible in an image, a moon (or other object) that covers about a pixel should be, too. If the moon/object is much smaller than one pixel, then you have to increase the exposure to make the pixel(s) that it falls into bright enough to show it… and that may overexpose the planet. When I take pictures of Jupiter and Saturn, I can resolve the Galileans and Titan easily, and they display the correct colors. Rhea is just about one pixel. But the moons smaller than that, I have to expose the image more and turn Saturn into a blob of glare. In these cases, you need to do something tricky to get the moons and planet to look nice in the same image. But for moons larger than a pixel, there's no extra effort required… it just works. |
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Aug 23 2016, 11:58 PM
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#48
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
...Have you thought of posting these to Reddit? There are ~4000 subscribers on https://www.reddit.com/r/junomission that I'm sure would appreciate these... Since Emily's uploaded version of the preliminary Marble Movie to youtube appears to get some considerable attention, I've notified it to the missionjuno site. |
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Aug 25 2016, 12:17 PM
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#49
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
A short sequence of motion-enhanced Marble Movie images showing moon transits:
It avoids the dimming of the moons near the bright Jupiter. At the center of the very right you may notice a faint moon. I'm working on a more sophisticated noise filter, which will hopefully be able to let the faint moons pass, and at the same time filter out the considerably brighter hot pixels, and statistical stray light and background noise. |
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Aug 25 2016, 06:54 PM
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#50
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Parts 5 and 6 of raw Marble Movie images are available.
And here the superfast service, rgb images of part 6 as preliminary level 2 avi: juno_marble_enhMoonsGrey_proc003_6_001_.avi ( 947.96K ) Number of downloads: 362 Movie of part 5 and level 1 stills will take a little more time, and will probably become available later today. |
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Aug 25 2016, 08:04 PM
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#51
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
No surprises in here, it's continuing the 15-minute imaging cadence, alternating RGB and METHANE frames, uninterrupted, up to midnight August 21. I'm working on getting the images & metadata uploaded to my website -- I'll be ready for thumbnails whenever you can produce them, Gerald
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 25 2016, 09:18 PM
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#52
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Your wish is my command, Emily.
Marble Movie, preliminary level-2-AVI, parts 1-6, and level 1 stills of parts 5 and 6 as zip. |
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Aug 25 2016, 10:49 PM
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#53
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 27 2016, 12:17 PM
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#54
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Marble Movie, level 2, parts 1 to 6, AVI and stills.
Moons are motion-enhanced, and grey-scaled. I've applied motion enhancement and noise filtering to 5-image windows. Additional application of distance function via Voronoi side effect wasn't required. |
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Aug 30 2016, 02:17 PM
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#55
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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Aug 31 2016, 10:20 PM
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#56
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
A very small appetizer of Marble Movie, part 7:
I may need several test runs to find a good solution for a complete marble movie, since the size of Jupiter increases rapidly towards the end of part 7. I'm currently rendering the level 1 stills in two sequences, a 4-fold supersampled version with 15°x10° fov for most of part 7, and 2-fold supersampled with 60°x60° fov for the end of part 7. |
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Aug 31 2016, 11:07 PM
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#57
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Awesome. Uploading the data now. Looks like it's the same as before, alternating RGB and METHANE every 15 minutes; there are two very brief gaps in the sequence on August 26 (one missing METHANE frame in one spot, both RGB and METHANE missing in another spot).
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 31 2016, 11:27 PM
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#58
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Selected imgages showing Jupiter's north polar region:
This is somewhat quick and dirty, but I first wanted to submit (the png version of) this overview to the missionjuno site, before spending too much time with remaining issues. Btw.: Three of the rgb images of part 7 are dedicated to (a?) moon(s). |
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Aug 31 2016, 11:29 PM
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#59
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
They were planning to image Ganymede on August 26.
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 31 2016, 11:43 PM
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#60
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Junior Member Group: Members Posts: 75 Joined: 8-July 15 Member No.: 7566 |
Those images are beautiful, Gerald. Good job!
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