Dawn Survey Orbit Phase, First orbital phase |
Dawn Survey Orbit Phase, First orbital phase |
Aug 5 2011, 12:37 PM
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#271
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
Any word yet on a detected magnetic field for Vesta? If present (and strong enough) it could have interesting effects on metallic or ionized ejecta as well as surface aging by solar ions, as seen on a few locations on the Moon.
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Aug 5 2011, 12:38 PM
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#272
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Member Group: Members Posts: 102 Joined: 29-January 10 From: Poland Member No.: 5205 |
Hi, I'm stich images into Spherical panorama. Only North is black.
Adam and this funny version of stich -------------------- Adam Hurcewicz from Poland
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Aug 5 2011, 01:00 PM
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#273
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
Very nice, Adam!
Algorimancer - there is no magnetometer on Dawn. It had to be removed due to mass limitations earlier in the design phase. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Aug 5 2011, 02:29 PM
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#274
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Member Group: Members Posts: 106 Joined: 26-September 05 Member No.: 508 |
Adam wov! The funny version is really nice.
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Aug 5 2011, 03:21 PM
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#275
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
A question: is the central peak of the south polar basin at the south pole or offset from it?
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Aug 5 2011, 03:24 PM
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#276
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Junior Member Group: Members Posts: 50 Joined: 27-June 11 From: Katlenburg-Lindau, Lower Saxony, Germany Member No.: 6038 |
Here's my interpretation of the rotation movie. (Thanks Emily for the frames!) The frame rate interpolation isn't as smooth as Tayfun's, unfortunately: http://youtu.be/zig5pu3jb1U?hd=1 The de-rotation of the image to a constant north-up orientation is very nice. Perhaps you could give Tayfun the de-rotated frames for him to produce a super-dooper soft-rotating north-up movie! -------------------- |
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Aug 5 2011, 10:24 PM
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#277
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Member Group: Members Posts: 140 Joined: 20-November 07 Member No.: 3967 |
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Aug 6 2011, 12:21 AM
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#278
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
Any word yet on a detected magnetic field for Vesta? If present (and strong enough) it could have interesting effects on metallic or ionized ejecta as well as surface aging by solar ions, as seen on a few locations on the Moon. I believe the magnetometer was removed for budget reasons. A loss for science for reasons you noted. Craig |
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Aug 6 2011, 05:39 AM
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#279
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Member Group: Members Posts: 106 Joined: 26-September 05 Member No.: 508 |
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Aug 6 2011, 07:14 AM
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#280
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
I believe the magnetometer was removed for budget reasons. from a Nature article on the mission: QUOTE Before launch, budget issues caused the mission team to drop two instruments originally meant to fly aboard Dawn; one of them, a magnetometer, will be especially mourned once the craft reaches Ceres. The magnetometer could have looked for fluctuations in the strength of the asteroid's magnetic field that might have provided clues as to whether the body harbours a briny ocean. Losing the instrument "was a big blow", |
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Aug 6 2011, 11:09 AM
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#281
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Member Group: Members Posts: 140 Joined: 20-November 07 Member No.: 3967 |
It is a detailed 3D model, only a small area near the north pole (where there is no photographic data) is missing. So presumably, if all systems continue moving along smoothly, that missing info will fill in pretty quickly? And what is needed for you to locate poles, equator, and the rest of a lat-long grid? Chuck |
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Aug 6 2011, 12:09 PM
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#282
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Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
The de-rotation of the image to a constant north-up orientation is very nice. Perhaps you could give Tayfun the de-rotated frames for him to produce a super-dooper soft-rotating north-up movie! I've had a second crack at smoothing the rotated movie, and it's looking much better: http://youtu.be/eBHgcTxhG-Y?hd=1 -------------------- |
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Aug 6 2011, 01:09 PM
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#283
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Member Group: Members Posts: 259 Joined: 23-January 05 From: Seattle, WA Member No.: 156 |
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Aug 6 2011, 02:27 PM
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#284
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Member Group: Members Posts: 910 Joined: 4-September 06 From: Boston Member No.: 1102 |
An orbit is 1325 days. So solstice to equinox is 331 days. I assume we are past solstice and going toward equinox--and therefore less than 331 days, but I'm only a microbiologist.
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Aug 6 2011, 02:52 PM
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#285
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
QUOTE Before launch, budget issues caused the mission team to drop two instruments originally meant to fly aboard Dawn; one of them, a magnetometer, will be especially mourned once the craft reaches Ceres. It's really too bad. I can't imagine how a magnetometer would represent a large cost component. It's not a complicated device. There's probably a magnetometer app available for my Droid. -------------------- If Occam had heard my theory, things would be very different now.
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