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Enceladus Volcanoes?

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dilo

Feb 19 2005, 10:02 PM

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Most recent narrow-field images of Enceladus, reported in the "raw images"section of Cassini homepage, are very interesting but also pretty strange...
Images link are reported below and were taken on February 17 using the CL1 and CL2 with increasing exposure time.

http://saturn.jpl.nasa.gov/multimedia/imag...eiImageID=32337
http://saturn.jpl.nasa.gov/multimedia/imag...eiImageID=32338
filtershttp://saturn.jpl.nasa.gov/multimedia/images/raw/raw-images-details.cfm?feiImageID=32339

Looking in particular to first one, sky is bright while Enceladus darkside still black. Apparently, the only possible explaination is that background is the dark side of Saturn atmosphere, but the presence of a star trail below the satellite demonstrate that, incredibly, background is the sky (see first attached image, which is the sun the 3 images associated with RGB channels). I don't know encounter geometry and I will appreciate very much if anyone can help me...
Anyway, the interesting thing is the bright halo near the bottom of Enceladus, clearly showed in the second attached image (an elaboration made strating from first and last image). Could this be the plume produced by some geologic activity (like an iceberg/volcano)?
Regards...

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Posts in this topic

dilo Enceladus Volcanoes? Feb 19 2005, 10:02 PM

remcook it looks like the sun coming from behind enceladus... Feb 19 2005, 10:24 PM

Mongo My guess is that Enceladus is being seen against t... Feb 20 2005, 12:36 AM

erwan My guess is: there is three different Enceladus il... Feb 20 2005, 01:17 AM

ilbasso Very interesting lighting at work here! The s... Feb 20 2005, 01:50 AM

erwan Ilbasso: If I understand what you wrote: Indeed we... Feb 20 2005, 02:10 AM

erwan Finally, I'm geometrically lost! Feb 20 2005, 02:20 AM

erwan A link to the next images in "Latest 500 raw ... Feb 20 2005, 02:35 AM

ilbasso Erwan, what I was saying was that remcook's su... Feb 20 2005, 04:42 AM

dilo Personally, i'm convinced that Sun is outside ... Feb 20 2005, 07:30 AM

edstrick I've posted a pic and commentary on this pictu... Feb 20 2005, 08:50 AM

remcook ibasso...I see! There seems to be another sour... Feb 20 2005, 10:06 AM

dilo I used space simulator (http://space.jpl.nasa.gov/... Feb 20 2005, 10:13 AM

Decepticon Use the IMG code below the FONT button. Press IM... Feb 20 2005, 01:40 PM

dilo Thanks to Decepticon and compliments to edstrick, ... Feb 20 2005, 01:59 PM

dilo Last trial, finally it seems to work!... Feb 20 2005, 02:22 PM

BruceMoomaw Personally, I'm waiting to find out whether Ca... Feb 20 2005, 09:00 PM

edstrick It's "normal" for objects in the sol... Feb 20 2005, 10:07 PM

volcanopele QUOTE (dilo @ Feb 20 2005, 06:59 AM)Thanks to... Feb 21 2005, 02:02 AM

tedstryk Jason: Do you know how the groundtrack for E4 wil... Feb 21 2005, 02:05 AM

volcanopele We will get a nice mosaic of this hemisphere: htt... Feb 21 2005, 02:10 AM

scalbers Greetings, Regarding the geometry and lighting ef... Mar 8 2005, 08:54 PM

volcanopele nope, still an image artifact. If it were real, t... Jul 30 2005, 03:13 PM

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