Dawn Survey Orbit Phase, First orbital phase |
Dawn Survey Orbit Phase, First orbital phase |
Jul 17 2011, 09:09 AM
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#1
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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 think it's time we start a new thread
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Jul 19 2011, 11:39 PM
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#2
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Here's a mashup of the image on the DLR website with high-resolution image PIA14313. I took the enhanced-color IR composite and broke it up into little chunks, then took each chunk and warped it to try to align with surface features in the high res image. Reassembled the color composite, then used that to blend to the high-res layer underneath. Full details on flickr (here)
Neat how the scarp and some of the craters and ejecta are greenish in the IR composite. -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Jul 20 2011, 07:26 AM
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#3
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
An update on Dawn trajectory:
in spite of engine running in last 20 hours, the probe is gently accelerating, progressively approaching a "circular orbit speed", as showed below: The green triangles indicates definitive survey orbit; they are two because I'm not sure if 2700km nominal height is referred to the center or the surface of Vesta... can someone help me? As additional info, now average acceleration toward Vesta is 3e-5 m/s2 while angle between trajectory and Vesta-to-Dawn vector is approaching 70°. Addendum: I do not share Emily's bad feeling about image release policy... look to the bright side, last released image was captured only 3 days before and also contrast/gamma is a lot better than previous ones! -------------------- I always think before posting! - Marco -
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