Dawn approaches Ceres, From opnav images to first orbit |
Dawn approaches Ceres, From opnav images to first orbit |
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10196 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
On Tuesday (two days from now, for visitors from the future), the first optical navigation image will be taken... hopefully we'll have it in our hands soon after that. So it's time for a new topic. Over the next few months we'll have progressively closer images and full orbit characterization sequences, no doubt including multispectral image sets.
A new world... This is a bit of reprocessing I have been doing with the Hubble images from a few years ago. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf 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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#2
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![]() Member ![]() ![]() ![]() Group: Members Posts: 423 Joined: 13-November 14 From: Norway Member No.: 7310 ![]() |
Some interesting yet confusing tweets from the LPSC:
QUOTE #LPSC2015 #Ceres Bright spot in center of basin, seen even above rim, so believe it's outgassing (needs higher res to get spectral info) https://twitter.com/Laurent_Montesi/status/...830420697387008 QUOTE Icy plume possibly seen on limb of Ceres. Exciting! #LPSC2015 https://twitter.com/MonicaGrady/status/577830943995621376 Is this based on RC2 observations, or OpNav 4-5? I got the impression from the press conference where the RC2 rotation animation was presented that cryovolcanism was low on the list for possible explanations for the brightest spots - and now it suddenly ranks high again? -------------------- |
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#3
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![]() Member ![]() ![]() ![]() Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 ![]() |
Some interesting yet confusing tweets from the LPSC: Is this based on RC2 observations, or OpNav 4-5? I got the impression from the press conference where the RC2 rotation animation was presented that cryovolcanism was low on the list for possible explanations for the brightest spots - and now it suddenly ranks high again? I think this reflect different ideas and opinions among different people. There might even be one or two who is like me - though I am certainly not a planetary scientist - who look into a problem from several different perspectives in a single month. The first tweet go a reply with the alternative explanation that: "'''its a granite compounded with ice , a remnant of impact object of the crater." My best guess is that the idea is based on that image used in the rotation where the bright spot stayed very bright even on the terminator. So what we're seeing in those tweets is an ongoing debate on how to interpret what we've seen at moderate resolution. |
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Lo-Fi Version | Time is now: 23rd June 2024 - 09:20 AM |
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