Amateur Video Captures Io's Shadow on Ganymede During Transit

[Wilms]

JUPITER MOON MOVIE:

August 18, 2009





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On August 16th, Philippine astrophotographer Christopher Go used a modern 11-inch Celestron telescope to photograph Io casting its shadow on Ganymede. Click on the image to launch the movie:

"I captured this rare event through a hole in the clouds," says Go. "It was a lucky clearing!"

In the movie, Io and Ganymede reveal themselves as fully-formed worlds with surface markings and a spherical shape. Io's circular shadow cuts a dark swath across Ganymede, transforming that giant moon (it is larger than Mercury) into a succession of crescents rarely seen by observers. Indeed, as far as we know, no telescope on Earth or space has ever photographed one of Jupiter's moons casting its circular shadow so clearly across another.

snip

http://www.spaceweather.com/archive.php?view=1&day=18&m...


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[parasim]

1. Whoa, that is cool!

thanks!

[Cresent City Kid]

2. Awesome!

Not only is it cool to see, it's a dial-up friendly video that I didn't even have to follow a link to. Thanks for posting this.

[comtec]

3. wow

just... wow

[Dead_Parrot]

4. Whoa. How cool is that? nt

[Phoonzang]

5. I've got a better telescope than that, but I can barely even find

the moon with it. I wish I could do that.

[montanto]

6. Wow, what are the chances?