Dawn's first orbit, including RC3, March 6, 2015- June 15, 2015 |
Dawn's first orbit, including RC3, March 6, 2015- June 15, 2015 |
Apr 21 2015, 07:52 PM
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#61
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Junior Member Group: Members Posts: 98 Joined: 30-November 05 From: Antibes, France Member No.: 594 |
The linear arrangement almost has the look of the "Voyager Mountains" on Iapetus... Well found for the analogy Scalbers! I've extracted a portion of the Voyager Moutains and the bright patch of Iapetus, about 5 km long, looks like the bright spot of Ceres... to a certain extent!
Attached image(s)
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Apr 21 2015, 08:07 PM
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#62
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Member Group: Members Posts: 715 Joined: 3-January 08 Member No.: 3995 |
The brightest subspot (lower in my animation) perhaps also consists of two sub-subspots, the lower of which appears first and the upper which brightens. As others have pointed out, these sorts of brightness variations could be simply due to variable geometry of exposed surfaces/shadowing. [attachment=35550:PIA19064...2x_gamma.gif] That animation really helps. I'm seeing (imagining) something along these lines: The main bright area seems to be in the western part of a little depression of some kind, with the brightest material not becoming visible until the shadow clears the slope. (Nothing in the drawing is necessarily to scale; plus, I intentionally left out the other bright spot(s).) |
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Apr 21 2015, 09:10 PM
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#63
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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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Apr 21 2015, 09:20 PM
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#64
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Junior Member Group: Members Posts: 48 Joined: 20-December 14 Member No.: 7370 |
A heavily zoomed and exposure enhanced version of the first 3 frames of the bright spot. (this may have introduced artifacts - but overall it allows a better overall visualization IMHO)
I think the these frames clearly show the outline of a crater with the far wall getting the first bit of sunlight. As the sun rises in the crater the crater gets more and more illuminated causing pixel saturation and bleed for the subsequent not shown images, but roughly corresponding to the crater dimensions. [click to animate the GIF] |
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Apr 21 2015, 10:16 PM
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#65
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Member Group: Members Posts: 555 Joined: 27-September 10 Member No.: 5458 |
Is there any speculation on what would be able to leave such a smooth, shiny depression? To me, it appears that much of the crater may be a similar make up because as the sun angle decreases, the crater continues to light up. Seems to be smack dab in the middle as well. Possibly a remnant of some cryo-gyser sort of blow out maybe?
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Apr 21 2015, 10:24 PM
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#66
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
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Apr 21 2015, 10:50 PM
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#67
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
...So someone could usefully do a poor-man's superresolution by enlarging (say 4x), rotating, and then stacking the images... PIA19064, 4x magnified (probably bicubic), then polar-projected (bilinear interpolated) to 2880x2880 pixels, then cropped and registered, then pairwise averaged (stacked), sharpened, forth/back animated: |
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Apr 21 2015, 11:05 PM
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#68
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Member Group: Members Posts: 715 Joined: 3-January 08 Member No.: 3995 |
Is anyone else having issues with the released animated GIF not repeating/looping?
( http://dawn.jpl.nasa.gov/news/Ceres_bright...k_into_view.asp ) |
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Apr 21 2015, 11:15 PM
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#69
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Yes, with (outdated) Windows XP / Chrome, at least.
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Apr 22 2015, 01:43 AM
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#70
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Senior Member Group: Members Posts: 2430 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Apr 22 2015, 02:26 AM
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#71
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
it is a setting ON!!! the dawn web site !
THEY!!! have the gif set to "run once" |
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Apr 22 2015, 03:06 AM
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#72
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Yeah, must be. I had to clear my cache to get it to run again. Hopefully this will be noticed and corrected soon; meanwhile, let's all be patient.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Apr 22 2015, 03:48 AM
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#73
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Senior Member Group: Members Posts: 4251 Joined: 17-January 05 Member No.: 152 |
Works fine (even on ancient xp) if you download the gif and play in, eg, irfanview.
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Apr 22 2015, 04:14 AM
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#74
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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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Apr 22 2015, 12:41 PM
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#75
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Junior Member Group: Members Posts: 61 Joined: 20-March 10 From: Western Australia Member No.: 5275 |
Emily, great input. Like everyone here, hanging out for the hi resolution pics.
Anxiety level akin to Huygens. We may actually be seeing a steady `volcanic eruption`. |
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