The Spirit Mars rover perched high atop Husband Hill at Gusev Crater is stargazing.
Imagery released September 9 by the NASA/Jet Propulsion Laboratory in Pasadena, California show the two moons of Mars - Phobos and Deimos cutting across the martian night sky. The unique pictures come courtesy of the Spirit robot, using its onboard camera system to take longing looks at the parade of celestial objects as they flew overhead.
Also released is a sequence of images of Mars' largest moon, Phobos.
The first two images in the sequence show gradual enhancements in the surface detail of Phobos, made possible through a combination technique known as "stacking."
This procedure uses a mathematical process known as "Laplacian sharpening" to reinforce features that appear consistently in repetitive images and minimize features that show up only intermittently.
In the image sequence, the large crater named Stickney is just out of sight on the upper right limb of Phobos.
The third image in the sequence was derived from the far right image by making it blurrier for comparison with the panoramic camera images to the left.
Another use of this nighttime imagery is to look for the presence of nighttime clouds or haze.
The ability of Spirit to become a nighttime skywatcher on Mars is the rover's extra solar energy collected during the day.
- Mars Rover Special Report
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