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Moon Images
tedstryk
post Nov 3 2007, 01:01 PM
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Many of the "brush strokes" are cracks that radiate from the large impact craters. As for the unusual features in the lower portion of the high resolution image, I always interpreted them as artifacts until the same features showed up in the second closest image. I have heard the theory that Proteus is the reconstituted remains of an old Neptunian moon that was destroyed by Triton's arrival. That may have something to do with it.
One things that helps is that although the closest frame is a single, underexposed frame, the next closest set has four images, and the more distant shots are made using two images. This allows for much more effective noise reduction when compared to the lone Voyager image of Puck. It's dimensions are 440416404 km, compared to about 502 km for Enceladus, 480468.4465.8 for Miranda, and is a bit larger than Mimas (414.8394.4381.4). Ceres also falls in that range (487 km at the equator, 455 km at the poles). Nereid is only ~340 km in diameter, and Larissa comes in at 216204164.


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MarcF
post Nov 3 2007, 04:55 PM
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I think you mentioned the diameter values for all the bodies except for Ceres, for which the numbers correspond to the radius. I' m almost sure Ceres has twice the size of Proteus, Miranda or Enceladus.
Marc.
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tedstryk
post Nov 3 2007, 05:06 PM
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Oops, you are right. I remembered an asteroid was in that range, but it is Vesta (578560458).


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jasedm
post Nov 5 2007, 04:57 PM
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Think I need to give myself a photoshop tutorial.
Very nice work with the enhancements - great to see even a tiny bit of detail on Nereid (especially since we probably won't be out this way again for 30 or 40 years)
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CAP-Team
post Apr 1 2008, 10:31 AM
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I noticed Steve Albers updated his Ariel map, he improved a bit of Uranus-shine part of Ariel
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tedstryk
post Apr 2 2008, 01:22 AM
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Yes, those are the images I reprocessed for my LPSC presentation.


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tedstryk
post Apr 2 2008, 01:44 AM
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Here are three of the main views.

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Here is the LPSC poster.

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....And the abstract.....

http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1362.pdf


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tedstryk
post Apr 3 2008, 11:20 AM
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Here are the Titania images.

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tedstryk
post Apr 3 2008, 11:30 AM
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And Miranda.

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Same image with night side enhanced:

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JRehling
post Apr 3 2008, 06:32 PM
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Wonderful stuff. Especially like the Ariel work.

My high school graduation speaker was John Glenn. He told us that the old maps had dragons in unknown territory and encouraged us all to be dragon chasers. This is serious dragon chasing.
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tedstryk
post Apr 3 2008, 09:04 PM
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Dragons...now that would be a neat discovery!

Here is my guest blog about it that I wrote during the conference.

http://planetary.org/blog/article/00001362/


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tedstryk
post Apr 10 2008, 11:04 AM
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Here is a view of Ariel transiting from Hubble.



Attached thumbnail(s)
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elakdawalla
post Apr 10 2008, 05:15 PM
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Cool. Are those two more moons to the left of Uranus? Where'd you get the data? Links, please! smile.gif

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tedstryk
post Apr 10 2008, 07:09 PM
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The inner one definitely is. The outer one may be a moon and may be a star (I am basing this on image to image motion). I will add that these were taken using the ACS wide field camera. High Resolution Channel images were taken during the transit, but they all missed the planet.

These images are from a large set http://archive.stsci.edu/proposal_search.p...st&id=10805. The datasets involved are:
j9q307laq
j9q307lbq
j9q307lcq
j9q307ldq
j9q307lfq
j9q307lgq
j9q307lhq


Here are some other sets of HST Uranus data from the same time period (and some Neptune stuff as well, since some of the proposals were mixed). Also, there were a lot of WFPC/2 images taken last year, but those are still proprietary.

http://archive.stsci.edu/proposal_search.p...st&id=10870
http://archive.stsci.edu/proposal_search.p...st&id=10534
http://archive.stsci.edu/proposal_search.p...st&id=10473
http://archive.stsci.edu/proposal_search.p...st&id=10502
http://archive.stsci.edu/proposal_search.p...st&id=10170
http://archive.stsci.edu/proposal_search.p...st&id=10102
http://archive.stsci.edu/proposal_search.p...hst&id=9823
http://archive.stsci.edu/proposal_search.p...hst&id=9725
http://archive.stsci.edu/proposal_search.p...hst&id=9035
http://archive.stsci.edu/proposal_search.p...hst&id=9344








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elakdawalla
post Apr 10 2008, 07:51 PM
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Here's the Solar System Simulator view. Looks like the inner dot is Miranda; the outer one must be a star as there's no other moon that's close.

--Emily


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