1. The first stage was
a detailed pencil drawing on tracing paper (as you see, I reversed the
reference sketch left/right).
2. I transferred the
outline of this to a sheet of art board, and airbrushed in the sky (had
I painted the landscape first I would have had to mask it).
3. The dust storm was added to add
drama to the scene, with an ominous darkening of the background.
4. Working in gouache, the landscape
was painted in quite transparent washes, rather like a water-colour.
5-7. Detail and texture
was gradually built up.
8. Finally the shape of the robot
rover was airbrushed through a frisket or mask and detail added with
fine sable brushes.
The original painting was auctioned by the Planetary Society in Pasadena
in 1998 to benefit the Carl Sagan Memorial Fund. It measures 13 x 18 inches
(33 x 45cm) and the medium is gouache.