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Dawn approaches Vesta, Approach phase, 3 May to 16 July 2011
pablogm1024
post Jul 1 2011, 03:34 PM
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QUOTE (Greg Hullender @ Jul 1 2011, 01:27 AM) *
Someone tell him to feel free to violate the rule against in-line images. :-)

--Greg

Hi Greg,
Only for you (well, no, for everybody in the forum), a brand new image is now available here. Enjoy


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Ian R
post Jul 1 2011, 03:50 PM
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Fantastic! Thank you Pablo.

I wonder, could you tell us whether the protrusion at the bottom of the image is the central peak of the large south-polar basin?


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volcanopele
post Jul 1 2011, 04:33 PM
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Are my eyes failing me, or are there some darkish regions across the northern hemisphere of Vesta in this new image? Maria? (the lunar meaning of the word, not the Titanian one...)


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nprev
post Jul 1 2011, 04:39 PM
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I dunno if I'd go so far as to call them mares yet, but they do look like albedo features!


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john_s
post Jul 1 2011, 04:58 PM
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Careful- there seems to be an artifact in the released image apparently due to some glitch with the tone curve- you can trace a sharp boundary between two shades of gray all the way round the right limb and across the left-hand side.

John
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pablogm1024
post Jul 1 2011, 07:06 PM
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QUOTE (Ian R @ Jul 1 2011, 03:50 PM) *
Fantastic! Thank you Pablo.

I wonder, could you tell us whether the protrusion at the bottom of the image is the central peak of the large south-polar basin?

Ian, I can confirm that North is up and South is down, in line with the HST-based shape model that you can find here.


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elakdawalla
post Jul 1 2011, 07:34 PM
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QUOTE (john_s @ Jul 1 2011, 09:58 AM) *
Careful- there seems to be an artifact in the released image apparently due to some glitch with the tone curve- you can trace a sharp boundary between two shades of gray all the way round the right limb and across the left-hand side.


Yeah, that is some kind of ugly processing that's been done on that photo...I'd like to post it but am hoping someone will come along and do something to it to make it look less artifacty.


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Steve G
post Jul 1 2011, 07:57 PM
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QUOTE (elakdawalla @ Jul 1 2011, 12:34 PM) *
Yeah, that is some kind of ugly processing that's been done on that photo...I'd like to post it but am hoping someone will come along and do something to it to make it look less artifacty.


I took my glasses off and a little blurred the picture is somehow more clear. Too much effort on the processing.
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djellison
post Jul 1 2011, 07:58 PM
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Yeah - this is the point when I wish we could have the images at their native resolution and without the enlargement that's being applied.
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Decepticon
post Jul 1 2011, 08:03 PM
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My understanding was that some images would be relesed today?

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djellison
post Jul 1 2011, 08:06 PM
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Decepticon, on this very page of this very thread, an image released today has been linked to and is being discussed. You would almost have to be intentionally trying to miss it to not notice.
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Steve G
post Jul 1 2011, 08:06 PM
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QUOTE (Steve G @ Jul 1 2011, 12:57 PM) *
I took my glasses off and a little blurred the picture is somehow more clear. Too much effort on the processing.

Attached thumbnail(s)
Attached Image
 
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JohnVV
post Jul 1 2011, 08:12 PM
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QUOTE
Yeah, that is some kind of ugly processing that's been done on that photo...I'd like to post it but am hoping someone will come along and do something to it to make it look less artifacty.

if we had a raw image ( or a 16 bit gray) we could
but once it is in jpg format ??? you know the saying " garbage in garbage out"
OpNav10_2297_MPS1.jpg ( aka dawn-image-062411.jpg )has way too much info already tossed out by jpg to do much with it
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Steve G
post Jul 1 2011, 08:35 PM
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It looks like North is at the top, but I'm wondering if that south crater we had been anticipating based on the Hubble data is close to being as dominant as we had been anticipating.
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Phil Stooke
post Jul 1 2011, 08:44 PM
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"I wonder, could you tell us whether the protrusion at the bottom of the image is the central peak of the large south-polar basin?"

From what we have so far, I think that protrusion is on the rim of the big crater, not its central peak.

The big crater is not going to look very dramatic except with grazing illumination as the seasons change. It's got to be quite old and battered - looks like quite a few superimposed younger craters.

Phil


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