New mosaic map of Itokawa |
New mosaic map of Itokawa |
Sep 9 2010, 03:06 PM
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#1
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Solar System Cartographer Group: Members Posts: 10151 Joined: 5-April 05 From: Canada Member No.: 227 |
Having a bit of time free I have embarked on a new global photomosaic map of asteroid 25143 Itokawa. Follow its construction here as I go. I'm hoping it won't take more than 4 to 6 weeks as other duties call. The mosaic will eventually go into PDS.
This follows the work I did on a map made from rendered images derived from Bob Gaskell's shape model. That had to be the first step because the control I'm using is derived from published lat-long grids superimposed on his rendered images. Now each individual image will be reprojected to fit that map. The large local relief will make it impossible to make all seams invisible, however. First step: the north polar area. The outer edge is at 40 N, with 90 N at the middle and 0 longitude at the top. 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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Sep 23 2010, 09:09 PM
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#2
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Solar System Cartographer Group: Members Posts: 10151 Joined: 5-April 05 From: Canada Member No.: 227 |
Here's an update to the Itokawa mosaic. I have added several images to the area on and north of the equator and around the 180 longitude region (middle of this map). The southern edge of that region will be next. Slow going, but it will gradually fill in. There will still be some further improvements to parts already done.
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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Sep 23 2010, 09:28 PM
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#3
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Member Group: Members Posts: 140 Joined: 20-November 07 Member No.: 3967 |
Wow! That is a fine piece of work, Phil.
But, to digress, I'm finding a few discrepancies in the plastic model that JAXA made for me, and the location of various features (three prominent rocks, so not very many places) in your earlier map. One reason is that had to draw lat/longs on the model by hand and eye, so my constant-scale natural boundary map, we should expect, is not perfectly aligned with the lat/longs of features on the cylindrical map. But the curious thing is that the discrepancy is an almost perfect 10 degrees. I'll post a map later with the misalignments called out, but is it possible that there might be some projection anomalies, let's call them, in your initial projection? |
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