[X] My Assistant

[mars loon]

A beautiful new animation of Phobos "Lunar" Eclipse is here from Cornell/JPL: 12/5/2005

November 27, 2005

Pancam Animation at 10 sec intervals

PIA03611: Spirit Movie of Phobos Eclipse, Sol 675

http://photojournal.jpl.nasa.gov/catalog/PIA03611

Spirit Phobos Eclipse Animation

NASA's Mars Exploration Rover Spirit observed the Martian moon Phobos entering the shadow of Mars during the night of the rover's 675th sol (Nov. 27, 2005). The panoramic camera captured 16 images, spaced 10 seconds apart, covering the period from when Phobos was in full sunlight to when it was entirely in shadow. As with our own Moon during lunar eclipses on Earth, even when in the planet's shadow, Phobos was not entirely dark. The small amount of light still visible from Phobos is a kind of "Mars-shine" -- sunlight reflected through Mars' atmosphere and into the shadowed region.

This clip is a sequence of the 16 images showing the eclipse at about 10 times normal speed. It shows the movement of Phobos from left to right as the moon enters the shadow. Scientists are using information about the precise timing of Martian moon eclipses gained from observations such as these to refine calculations about the orbital path of Phobos. The precise position of Phobos will be important to any future spacecraft taking detailed pictures of the moon or landing on its surface.


and more here ...


PIA03612: Spirit View of Phobos Eclipse, Sol 675

http://photojournal.jpl.nasa.gov/catalog/PIA03612

Annotated Spirit View of Phobos Eclipse, Sol 675


This view is a time-lapse composite of images taken 20 seconds apart, showing the movement of Phobos from left to right. (At 10 seconds apart, the images of the moon overlap each other.) Scientists are using information about the precise timing of Martian moon eclipses gained from observations such as these to refine calculations about the orbital path of Phobos. The precise position of Phobos will be important to any future spacecraft taking detailed pictures of the moon or landing on its surface.

[jvandriel]

Ken,

here is another animation taken by Spirit on Sol 692 with the L8 pancam.

It is a sequence of 18 images and the time interval is 0.50 seconds.

Is this Phobos again with internal reflection inside the camera?

Maybe you can explain it.

jvandriel

Attached thumbnail(s)

 

[um3k]

Ken,

here is another animation taken by Spirit on Sol 692 with the L8 pancam.

It is a sequence of 18 images and the time interval is 0.50 seconds.

Is this Phobos again with internal reflection inside the camera?

Maybe you can explain it.

jvandriel

There is no way that could be Phobos. L8 is a neutral density filter, that's the sun.

[mars loon]

There is no way that could be Phobos. L8 is a neutral density filter, that's the sun.

Ooops, a looney mistake

That is the sun, along with some ghost images of the Sun.

Phobos is in some other images from sol 691