foldable map of Itokawa, a cook's tour of the sausage factory |
foldable map of Itokawa, a cook's tour of the sausage factory |
Jan 23 2010, 03:39 AM
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#1
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Member Group: Members Posts: 140 Joined: 20-November 07 Member No.: 3967 |
Not that I mean to compare Itokawa to a sausage, just to show you behind the scenes of making the map, along with the map itself, here, rather than continue to clog up the Hayabusa Return to Earth thread.
Here is the map itself, so far along as the pasting in of the mosaic has gone. And here is are two shots of the folded up map, compared with the computer-made model. Note the arrow to one of the "ears." The first try of the map failed to capture the ear, so I replotted the boundary, as seen in the Tracing image. All photos credit: Sara Adkins Studio |
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Feb 22 2010, 03:30 PM
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#2
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Member Group: Members Posts: 140 Joined: 20-November 07 Member No.: 3967 |
So, on to the valley-bound map. This map organizes Itokawa's surface into districts of hills. (the earlier one organized the surface into districts of basins.)
Unlike Eros, Ida, Phobos and Deimos, Itokawa has a more complex valley-tree. E, I, P, & D. all resolved their valley lines as single lines, no branches. But Itokawa's valley system is difficult to prune to a single line. So, a poll, unfair perhaps, because the maps are incomplete, but of A or B, which do you prefer for a general purpose map? A is more compact. The branches marked 10, 11, & 17 have been pruned away. B gives more articulation to the various hill districts of the head. Both A & B have considerable size distortion on the body section, but far less than in a standard cylindrical map. (It'd be interesting to quantify and compare precisely how much the two systems differ -- constant-scale natural boundary vs simple cylindrical. Hmm. Wonder how to do that . . .) |
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