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Unmanned Spaceflight.com _ Cassini's ongoing mission and raw images _ New Occultation Movie And Dione Pictures

Posted by: dilo Sep 24 2005, 07:18 AM

Breathtaking Dione+Ring+Saturn images (RGB filters the wide angle one, false color R+CL+G the close up):


and amazing movie of Enceladus occulted by Tethys (if I'm not wrong)...

There is also a smaller moon passing in front of the rings smile.gif ..it is Prometheus?

Posted by: Toma B Sep 24 2005, 08:42 AM

Beautiful!!!

Just Beautifull!!!!

smile.gif smile.gif smile.gif smile.gif

Posted by: dilo Sep 24 2005, 09:24 AM

Thanks, Toma.
I'm not sure about last animation frame timing, because Enceladus eclipse shouldn't be total and, based also on rings aspect, it was taken very later... sad.gif

Posted by: edstrick Sep 24 2005, 10:04 AM

That's not Enceladus.. it's Tethys -- see Ithaca chasma and the craters. As Cassini gets closer, Dione's quite a bit closer to the spacecraft.

and yes, that last pic is out of sequence.

Posted by: edstrick Sep 24 2005, 10:12 AM

quick and dirty contrast stretch and sharpening. Tethys behind Dione.

 

Posted by: elakdawalla Sep 24 2005, 03:14 PM

QUOTE (dilo @ Sep 24 2005, 12:18 AM)
There is also a smaller moon passing in front of the rings  smile.gif ..it is Prometheus?
*

It's Pandora.

Awesome.

--Emily

Posted by: volcanopele Sep 24 2005, 11:13 PM

For the NAC view of Dione against Saturn, the BL1 frame image is here:

http://saturn.jpl.nasa.gov/multimedia/images/raw/casJPGFullS14/N00039942.jpg

Posted by: dilo Sep 25 2005, 06:49 AM

Thanks, Jason. So this is the best true color match with previous wide-angle (maybe someone can obtain better results...):


I apologoze for previous completely misleading moons identifications in the movie... Is not easy to do "on the fly" and there are more skilled people than me, so thanks to all for the corrections! wink.gif

Posted by: mike Sep 25 2005, 09:09 AM

Wow. Looking at an image like that, I get some vague notion of how huge Saturn really is. And the near-vacuum of space always makes for beautifully crystal clear views.

It also makes a good desktop image. smile.gif

Posted by: ilbasso Sep 28 2005, 02:11 PM

These are the kinds of images that should be on the front page of every newspaper in the world, instead of pictures of human suffering or human idiocy.

Posted by: ljk4-1 Jan 28 2006, 02:15 AM

Speaking of occultations, does anyone know if anyone on the Cassini team or any professional astronomers working with them imaged the occultation of a faint star by Saturn on January 25?

http://www.iota-es.de/satocc_2006.html

SATURN OCCULTS A FAINT STAR

For observers in Europe, Africa, and Asia, an 8.2-magnitude star (SAO
98054) will be occulted by (passes behind) Saturn's ring system starting
at about 18:45 Universal Time January 25th. The star reappears out from
behind the planet itself around 20:55 UT.

http://www.popastro.com/sections/occ/by_cancri.htm

Just wondering if anyone had coordinated some kind of project to study the rings as the star went behind them and the ring data from Cassini. I did not see a mention of such a project in the latest status report, nor anything on the ALPO Saturn Section Web site:

http://www.lpl.arizona.edu/~rhill/alpo/sat.html

One amateur image of the event from the net so far:

http://www.popastro.com/phpBB2/viewtopic.php?t=1920

Posted by: pat Feb 1 2006, 03:06 PM

QUOTE (ljk4-1 @ Jan 28 2006, 03:15 AM)
Speaking of occultations, does anyone know if anyone on the Cassini team or any professional astronomers working with them imaged the occultation of a faint star by Saturn on January 25? 

http://www.iota-es.de/satocc_2006.html

SATURN OCCULTS A FAINT STAR

For observers in Europe, Africa, and Asia, an 8.2-magnitude star (SAO
98054) will be occulted by (passes behind) Saturn's ring system starting
at about 18:45 Universal Time January 25th. The star reappears out from
behind the planet itself around 20:55 UT.

http://www.popastro.com/sections/occ/by_cancri.htm

Just wondering if anyone had coordinated some kind of project to study the rings as the star went behind them and the ring data from Cassini.  I did not see a mention of such a project in the latest status report, nor anything on the ALPO Saturn Section Web site:

http://www.lpl.arizona.edu/~rhill/alpo/sat.html

One amateur image of the event from the net so far:

http://www.popastro.com/phpBB2/viewtopic.php?t=1920
*


The UVIS and CIRS instruments on Cassini do observe stellar occultations by the rings. I can't remember offhand how many to date. The geometry for the occultation on Jan 25 you indicated, from Cassini's Point of View, was almost certainly such that the star was not occulted by the rings.

Posted by: Rob Pinnegar Feb 1 2006, 04:37 PM

QUOTE (edstrick @ Sep 24 2005, 04:04 AM)
and yes, that last pic is out of sequence.
*

Probably Enceladus is in Saturn's shadow in the last image.

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