The slopes and roughness of the Philae landingsite

I wanted to get a feel for the landscape in which Philae is set to land. I had already built a resonably accurate terrainmodel of the area. So I decided to play a little with the data.

The result are these two maps.

First a map showing the slope of the terrain. There are a few really steep places in the landing area but most of it is thankfully rather flat.

Then a slightly more worrying map showing the surface roughness. There are a few boulder fields that scare. but much of the area seem to be smooth (at least on the scales resolved in my dataset.)

Obviously my methods are not as refined as the ones employed by the mission teams but these maps should give an idea of the challenges facing the little lander.


I also made this Anaglyph:


Testing the Planetarium version

I’m preparing a version of my shapemodel for rendering in realtime.

Dipl. Ing. (FH) Rainer Christiansen, curator of the Mencke Planetarium in Gluecksburg, contacted me and suggested the possibility. Working under his supervision we converted the model to the E&S digistar format. This video was recorded by Rainer as part of the testing of the models performance in theirĀ Evans & Sutherland Digistar planetarium system.

Mencke Planetarium:

Shapemodel 3D Rendering

I rendered this full rotation of my shape model:

Mono version:

Anaglyph version:

3DTV version:

One where I marked the landing areas. The Primary landingsite, J, in blue and the backup, C, in red:


I’m preparing a digital release for planetariums and Celestia and things like that. Stay tuned.

Shapemodel progress

Spaceflight Now feature a couple of images of the side of the comet that we have seen very little of.

One of the photos shows a monitor screen displaying this rare gem:

I combined the tv screen photo with an earlier cropped OSIRIS release

a bit of alignment and color balancing led to this “new” OSIRIS shot:

Armed with this new shot I had enough to coax out some stereo coverage of the region and add to the side of my Shapemodel.

I will put the new mesh online in a couple of days. It needs a little more work.

October 8: Rising over the edge

Synthetic Anaglyph view of 67P / Churyumov-Gerasimenko October 8: Rising over the edge

I draped the navcam images from October 8 onto my digital shapemodel and rendered this movie.

I just finished updating my digital terrainmodel to include the “belly” of the comet.
This latest NavCam set was an excellent way of testing its fidelity.