HAMO, (aka High Altitude Mapping Orbit) Options

[Phil Stooke]

Once you have a DEM you can project it any way you like. A DEM of North America might be represented without planetary curvature, in fact it probably would be most often. This one is shown with a plane datum, the next might be done with curvature added. No problem either way. Anyone may prefer one over the other, but don't represent the other as wrong. In time we'll have everything.

Phil

[stevesliva]

Slew of new stuff:
http://dawn.jpl.nasa.gov/feature_stories/s...rly_results.asp
http://dawn.jpl.nasa.gov/multimedia/vesta_dawn_gallery.asp
http://dawn.jpl.nasa.gov/multimedia/imageo...p?date=20111012

Some pretty cool slides:
http://dawn.jpl.nasa.gov/multimedia/images/slide5_image.jpg
etc.

Replay of conference here:
http://www.ustream.tv/recorded/17833902
Interesting comments about the troughs.

[Phil Stooke]

The latest image releases at the Dawn site are much higher resolution - very nice indeed. And it will get even better!

Phil


http://dawn.jpl.nasa.gov/multimedia/imageo...th=2011-October

[dilo]

The latest image releases at the Dawn site are much higher resolution - very nice indeed. And it will get even better!

True. But Oct,12 image showing boulders in the crater floor is quite "flat" and deserves an enhanced version:

Attached thumbnail(s)

 

[pablogm1024]

Any opinions on the strange half-craters on the recent IOTDs?

[stevesliva]

Sure looks like a trough between the two.

[JTN]

Railway embankment between the two craters?

(Broad gauge, obviously.)

[monty python]

It's strange isn't it. I see areas on vesta that look like hummocky flow features -like land slide debris - covering the surface. But the half craters look younger than this debris. Could it be that this debris is varying in thickness and distribution so that the the cratering events here punched into only parts of this less consolidated stuff which partially slumped into these craters?

[bk_2]

The differing depth of loose ejecta may come into it, the boundary of the slump in the lower crater certainly climbs the slope of the smooth wall to the south. But I think that the angle of incidence of the impact may also have an effect. The floor of the crater is not in the center.

[Gladstoner]

Any opinions on the strange half-craters on the recent IOTDs?

Looking at the available anaglyphs, some of the strange craters appear to lie on slopes. There should be more slumping and sliding on the 'uphill' sides. It is even conceivable that the slope could be steep enough to allow debris to spill out of the craters.

And just because I like drawing pictures:

[machi]

Vesta in almost natural colors (filters centered at 440, 650 and 750 nm).
Two basic images:





English captions and 5 other versions are here.
Original "raw" images are available here.

[pablogm1024]

Vesta in almost natural colors (filters centered at 440, 650 and 750 nm).

Wow, it is very remarkable that, even in natural colors, the ejecta blanket around Oppia has an obviously different shade of gray. Congratulations, Machi, terrific images.

[Phil Stooke]

... and the full disk one fills in a bit more of the northern hemisphere. Here's my current coverage map of the north pole. Locations may not be very accurate at the terminator but the general appearance is clear.

Phil

[dilo]

Impressive, Phil!
Is grooves spiral structure real? Which is explaination?
I have impression that North pole is hiding something important but I suspect we have to wait looong time before seeing it!

[pablogm1024]

I have impression that North pole is hiding something important but I suspect we have to wait looong time before seeing it!

Dilo,
We are all waiting to see what the north pole hides, and according to our calculations we should be able to see most of it by July 2012. We will keep you posted.