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foldable map of Ida
chuckclark
post Oct 27 2008, 12:57 PM
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Here is a constant-scale natural boundary map of Ida that folds to a decent replica of the asteroid. Map edges are Ida's major ridges.[attachment=16299:Ida_MaxRidge_post.jpg]
[EDIT] Here it is again with the photomosaic properly credited; apologies to M. Nyrtsov for my oversight.
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t_oner
post Nov 10 2008, 03:13 PM
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Chuck the comparison photo is really impressive.

Due to Ida's irregular shape slices will not be contiguous and I suggest first we try it with Phobos. I will post the slices in DXF and CDR formats in a few days.
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chuckclark
post Nov 10 2008, 08:42 PM
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Thanks, Tayfun. Like I say, the view from the other direction is not so perfect -- I have an Adkins digital pic of that side, can you send me a digital image of the shape model from the same view? I'll make another comparison plate. Here, I'll post what I have . . .

Due to Ida's irregular shape slices will not be contiguous and I suggest first we try it with Phobos. I will post the slices in DXF and CDR formats in a few days.
[/quote] I agree. Especially as Ida is the most complex shape, best to work up to it.
Have you tried to assemble the Phobos map-model yet? Phobos model hold their shape fairly well without an infill, but they'll be much stronger with it.
Note that the slices will have to be truncated, primarily at the "blunt" end, where the map precis (the choice of boundary tree) leaves the largest lobe, or flattened facet. We'll probably have to work this out ad hoc, by trial and error. At the DPS meeting, some education experts were excited about the possibilities -- tactile, hands-on activity, etc. -- but immediately asked about some kind of solid fill. So I think it's worth the effort. We have stuff here called foam-core board; I'll probably use that to cut the slices. It comes in 1/8 inch thickness increments.
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- chuckclark   foldable map of Ida   Oct 27 2008, 12:57 PM
- - jumpjack   QUOTE (chuckclark @ Oct 27 2008, 02:57 PM...   Nov 6 2008, 08:24 AM
|- - dilo   I tried with the aid of my son but result was very...   Nov 6 2008, 03:07 PM
|- - chuckclark   I've put it together twice -- I'll post a ...   Nov 6 2008, 05:31 PM
- - Phil Stooke   Does my old friend Maxim Nyrtsov read this? Hi Ma...   Nov 6 2008, 06:14 PM
- - jumpjack   It was difficult for me even to build a paper Eart...   Nov 7 2008, 07:26 AM
|- - chuckclark   jumpjack: Here is a link Phobos Arts and Crafts th...   Nov 7 2008, 02:16 PM
|- - jumpjack   QUOTE (chuckclark @ Nov 7 2008, 04:16 PM)...   Nov 10 2008, 08:12 AM
- - Tayfun Öner   I built the physical models that Chuck is using to...   Nov 7 2008, 11:41 AM
|- - jumpjack   QUOTE (Tayfun Öner @ Nov 7 2008, 01:41 PM...   Nov 7 2008, 12:52 PM
- - djellison   What format are those models available in?   Nov 7 2008, 12:13 PM
- - Tayfun Öner   I can convert the models to most popular formats. ...   Nov 7 2008, 01:06 PM
|- - jumpjack   QUOTE (Tayfun Öner @ Nov 7 2008, 03:06 PM...   Nov 7 2008, 01:20 PM
- - chuckclark   OK, I corralled a photographer, (S. Adkins) to tak...   Nov 10 2008, 01:33 PM
- - Tayfun Öner   Chuck the comparison photo is really impressive. ...   Nov 10 2008, 03:13 PM
|- - jumpjack   QUOTE (Tayfun Öner @ Nov 10 2008, 05:13 P...   Nov 10 2008, 06:52 PM
|- - chuckclark   Thanks, Tayfun. Like I say, the view from the oth...   Nov 10 2008, 08:42 PM
- - Tayfun Öner   By hand I presume you mean manually, no I will mak...   Nov 10 2008, 08:43 PM
|- - chuckclark   this may surprise you but I don't have much fa...   Nov 10 2008, 08:46 PM
- - Tayfun Öner   Here is a rendering from a similar angle.   Nov 11 2008, 05:20 PM
- - Tayfun Öner   Here are the Phobos slices. As I don't know ho...   Nov 11 2008, 06:00 PM
|- - chuckclark   Well, so far so good. I downloaded and unzipped t...   Nov 11 2008, 08:14 PM
|- - chuckclark   QUOTE (Tayfun Öner @ Nov 11 2008, 01:00 P...   Nov 15 2008, 06:54 PM
- - chuckclark   Okay, so borrowing a little from both systems, her...   Nov 15 2008, 07:17 PM
- - Tayfun Öner   Chuck, that is brilliant. Here are your cuts both ...   Nov 15 2008, 07:58 PM
- - djellison   GENIUS   Nov 15 2008, 09:26 PM
|- - chuckclark   QUOTE (djellison @ Nov 15 2008, 04:26 PM)...   Nov 17 2008, 02:01 PM
- - Phil Stooke   Very interesting and entertaining stuff. I think ...   Nov 17 2008, 04:10 PM
- - Tayfun Öner   Here are ribs for Eros.   Nov 21 2008, 06:59 PM
|- - chuckclark   QUOTE (Tayfun Öner @ Nov 21 2008, 01:59 P...   Nov 21 2008, 10:02 PM
- - Tayfun Öner   Eros ribs updated, please note that north is up fo...   Nov 22 2008, 10:56 AM
- - jumpjack   I just discovered that Google Sketchup can easily ...   Dec 29 2008, 10:00 PM
- - paxdan   Here is a link to SliceModeler http://blog.makezin...   Jan 6 2009, 06:08 PM
- - jumpjack   QUOTE (paxdan @ Jan 6 2009, 07:08 PM) Her...   Jan 6 2009, 06:58 PM


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