(9) Metis nimmt Form an
On the International Telescope Meeting Vogelsberg Michael Koch presented some globes of Minor Planets and small moons. He used informations from the american National Space Agency (NASA)
With an Internet-tool it was possible to transfer the DAMIT-*.OBJ-Files into a STL file which is used for modern 3-d-printer. Michael was so kind to produce a first Metis-Globe for me.
The printing was made in 2 parts...
...which are fit together with some glue.
He produced 2 Metis-Globes. A convex and a non-convex modellInteresting is a look back into the history of globes, to see some mile-stone.
For a suitable color some S-Class meteorids were checked. But they were very different and not helpfull.
The second idea was to make a photometry of a box with water-colours. The suitable color should be between black and ocher. Several trys bring the best result with an albedo of 15% and a relation green:red of 1:1,16
Now it is possible to simulate the perspective and light-direction of several positions. The following picture show the situation during the occultation of March 7. at 2014.