Enceladus Rev 61 brush pass Wednesday 12th March 2008.

3488 · Mar 6, 2008

Take a look @ this.Something to REALLY look forward to.Cassini Spacecraft to pass Enceladus @ 50 KM altitude on: Wednesday 12th March 2008.Information: http://ciclops.org/view.php?id=4806Map: http://photojournal.jpl.nasa.gov/jpeg/PIA08408.jpgI can't wait.Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

silylene · Mar 6, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Take a look @ this.Something to REALLY look forward to.Cassini Spacecraft to pass Enceladus @ 50 KM altitude on: Wednesday 12th March 2008.Information: http://ciclops.org/view.php?id=4806Map: http://photojournal.jpl.nasa.gov/jpeg/PIA08408.jpgI can't wait.Andrew Brown. Posted by 3488</DIV>I agree!  Thank you for the reminder. I want to see if the mass distribution in Enceladus is spherically symmetrical.  Remember, I had predicted long ago that it was not, and this asymmetric mass distribution causes much greater tidal warming than a spherically symmetrical mass distribution  (and thus the source of water and the tiger claws). (formerly known as 'silylene' prior to my handle being vaporized) <div class="Discussion_UserSignature"> petet = silylenePlease, please give me my handle back ! </div>

bobw · Mar 6, 2008

@ 50 KM altitude Cassini should be able to see rocks that look like aliens!  I'm looking forward to it, thanks for the heads-up. <div class="Discussion_UserSignature"> </div>

3488 · Mar 6, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>I agree!  Thank you for the reminder. I want to see if the mass distribution in Enceladus is spherically symmetrical.  Remember, I had predicted long ago that it was not, and this asymmetric mass distribution causes much greater tidal warming than a spherically symmetrical mass distribution  (and thus the source of water and the tiger claws). (formerly known as 'silylene' prior to my handle being vaporized) Posted by petet</DIV>Hi silylene,Good to see you again. Looking at the graphics on the CICLOPS site, it does look as if the trajectory is perfevt to test the assymetry theory of Enceladus's core & also to even measure localised mass concentrations (MASCONS) from just north of the equator, all the way to the south pole of Enceladus.To sample the plumes directly with a targetted encounter will reveal so much.This is very reminiscent of the Galileo Spacecraft encouter with Io, when Galileo went through the top of the Thor volcano & directly sampled the sulphur dioxide particles.This encounter with Enceladus, along with the other grazing pass on Thursday 9th October 2008 (only three days after the MESSENGER second close encounter with Mercury, that is going to be one hell of a week), will be the closest encounters with non landing spacecraft since the Viking 2 orbiter with Deimos, back in October 1977. Keep an eye on thread, I will post any new stuff as soon as I find it. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Mar 6, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>@ 50 KM altitude Cassini should be able to see rocks that look like aliens!  I'm looking forward to it, thanks for the heads-up. Posted by bobw</DIV>Hi bobw,It's good to see you again too.Your avatar is the damaged solar panel on MIR after the Progress supply vehicle impacted, IIRC?I've asked Dr Porco on the CICLOPS site what the maximum resolution we can expect.The encounter speed is approx 9 KM per second. We'll see. If I get an answer, I will post it here.Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Mar 6, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Hi bobw,It's good to see you again too.Your avatar is the damaged solar panel on MIR after the Progress supply vehicle impacted, IIRC?. Posted by 3488</DIV> I believe , Andrew, it's the ripped panel on the ISS they repaired 2 (?) missions ago. MW   <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

MeteorWayne · Mar 6, 2008

This encounter with Enceladus, along with the other grazing pass on Thursday 9th October 2008 (only three days after the MESSENGER second close encounter with Mercury, that is going to be one hell of a week), Actually, this upcoming week is a hell of a week.Jules Verne on Fri/St, Shuttle Tuesday, this on Wednesday...

<div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Mar 6, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>I believe , Andrew, it's the ripped panel on the ISS they repaired 2 (?) missions ago. MW   Posted by meteorwayne</DIV>Cheers MeteorWayne, for you putting me right. Coming to think of it, that sounds right.Some repair that was carried out, considering it was not preplanned.Lets hope that there are not any more surprises like that awaiting the future Shuttle crews.Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Mar 6, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>This encounter with Enceladus, along with the other grazing pass on Thursday 9th October 2008 (only three days after the MESSENGER second close encounter with Mercury, that is going to be one hell of a week), Actually, this upcoming week is a hell of a week.Jules Verne on Fri/St, Shuttle Tuesday, this on Wednesday...

Posted by meteorwayne</DIV>Very true MeteorWayne.I forgot all about Jules Verne. European integrity in the fields of technology in many respects are riding on this.Lets hope that ALL goes very well & according to plan.STS 123 Endeavour I.m sure will be OK. The first section of the Japanese KIBO module.It's all happening.Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

brellis · Mar 6, 2008

greetings allRegarding resolution From the CiCLOPS Rev 61 page:Following CIRS, ISS will be prime at 18:25:12 UTC, 41 minutes before closest approach, when it will make a three-panel clear filter NAC mosaic at the highest resolution of this encounter, 200 m/pixel. One clear filter WAC image will also be obtained. CIRS, UVIS, and VIMS will also ride along, and toward the end of this 20-minute-long observation period, Cassini's Plasma Spectrometer (CAPS) and Magnetospheric Imaging Instrument (MIMI) will begin making measurements as closest approach is imminent. Glad everyone's trying to get along with this new sopffftware, hehe  <div class="Discussion_UserSignature"> I'm a recovering optimist - things could be better. </div>

Philotas · Mar 7, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>I've asked Dr Porco on the CICLOPS site what the maximum resolution we can expect.The encounter speed is approx 9 KM per second. We'll see. If I get an answer, I will post it here.Andrew Brown. Posted by 3488</DIV> Well the photojournal page has the following to say:"During this flyby, as well as the flyby on Oct. 9, 2008, Cassini's in-situ instruments will make the most of the remarkably close encounters. The imaging cameras and the other optical remote sensing instruments will get a better look at the moon during the flybys that have been proposed for Aug. 11 and Oct. 31. Radar will acquire albedo measurements during the March and Oct. encounters.Colored lines on the map enclose regions that will be covered at different imaging scales as Cassini encounters Enceladus. The highest-resolution images, about 200 meters (660 feet) per pixel, will be obtained over the cratered terrains of the northern hemisphere, prior to closest approach. Cassini will also acquire images soon after closest approach. However, the moon will be in eclipse during this time—sitting within Saturn's shadow—and surface features will likely not be visible. Additional images at resolutions above 700 meters per pixel (2,300 feet) will be acquired following the eclipse period."If 200 m/pixel is max, then surely this flyby will not return any pictures with exceptionally high resolutions. Does not this global mosaic have a resolution of 90 m/pixel? http://photojournal.jpl.nasa.gov/catalog/PIA08354Anyway, this flyby is going to rock.

Edit: This is our best picture of Europa so far I assume.http://photojournal.jpl.nasa.gov/catalog/PIA062524 m/pixel, taken from 208 km attitude <div class="Discussion_UserSignature"> </div>

3488 · Mar 7, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>

Edit: This is our best picture of Europa so far I assume.http://photojournal.jpl.nasa.gov/catalog/PIA062524 m/pixel, taken from 208 km attitude Posted by philotas</DIV>Cheers philotas.Yes you are correct PIA62524 is the sharpest image yet of Enceladus.I did wonder about that 200 m per pixel reso. Sometimes the sharpest images cover a region so small, that the Photojournal map does not show it (area is too small).We had this with Iapetus, Rhea, Enceladus before, Tethys & Dione. In some ways it is good to see some of the more primitive terrain in the mid northern latitudes in high resolution. Reasoning being, that if we are to properly understand Enceladus, we need to image & examine much of the surface as possible.This may well help explain, why the Antarctic area of Enceladus is active, where as the northern latitudes are as dead as the Dodo?Tracking will help explain & confirm silylene's theory of an assymetric mass distribution (is the core of Enceladus displaced towards the south)?Below is a 45 metre resolution crop. http://photojournal.jpl.nasa.gov/catalog/PIA08355<img src="http://sitelife.space.com/ver1.0/Content/images/store/3/0/a3097072-6dfd-4df5-b0fe-dfddfbaa909b.Medium.jpg" alt="" />Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

robnissen · Mar 7, 2008

I am slightly disappointed.  I was hoping there would be very high resolution pictures of the "tiger stripes" that is what I REALLY REALLY wanted to see

3488 · Mar 11, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>I am slightly disappointed.  I was hoping there would be very high resolution pictures of the "tiger stripes" that is what I REALLY REALLY wanted to see Posted by robnissen</DIV>I know, I too would have liked to see that, but even so, this encounter is still really very interesting.First image during the approach :N00103720.jpg was taken on March 10, 2008 and received on Earth March 11, 2008. The camera was pointing toward ENCELADUS at approximately 985,336 kilometers away, and the image was taken using the CL1 and CL2 filters.http://saturn.jpl.nasa.gov/multimedia/images/raw/casJPGFullS38/N00103720.jpg<img src="http://sitelife.space.com/ver1.0/Content/images/store/7/15/671eed14-ac8e-496d-8f17-c0fe0c88f515.Medium.jpg" alt="" />Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

bobw · Mar 11, 2008

<div class="img"> I saw this on the front page at Fox news. </div><div class="img"> </div><div class="img"> <img src="http://sitelife.space.com/ver1.0/Content/images/store/3/3/d36a99af-710e-4a20-83fc-0d2418ed8013.Medium.jpg" alt="" width="473" height="393" /> </div><div class="img">                                                                                          AP The Cassini spacecraft captures surface images of Saturn's moon Enceladus; the craft will land there Wednesday to learn whether the environment can support life. </div> <div class="Discussion_UserSignature"> </div>

robnissen · Mar 12, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'> I saw this on the front page at Fox news.                                                                                             APThe Cassini spacecraft captures surface images of Saturn'smoon Enceladus; the craft will land there Wednesday to learn whether the environment can support life.  </DIV> Fox News ALWAYS prints the news that the Mainstream Liberal Media SUPPRESSES.  I wonder if Enceladus is Dick Cheney's undisclosed location.

Ricardo_Savino · Mar 12, 2008

So!? No news about the flyby? I´m looking in all places but it seems there´s no data avaiable yet!

<div class="Discussion_UserSignature"> Look up and feel small! </div>

3488 · Mar 12, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>So!? No news about the flyby? I´m looking in all places but it seems there´s no data avaiable yet!

Posted by Ricardo_Savino</DIV>Hi Ricardo_Savino,Welcome to SDC.Downlinking is starting about now (Cassini's HGA should be pointing at Earth right now). Remember the Saturn system is at least 90 light minutes away, so we will not hear anything until at least then.Downinking continues for approx 9 hours, but some images may well be available by then.Lets hope that there were no navigational errors with Cassini slamming into Enceladus!!!!Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

Ricardo_Savino · Mar 12, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Hi Ricardo_Savino,Welcome to SDC.Downlinking is starting about now (Cassini's HGA should be pointing at Earth right now). Remember the Saturn system is at least 90 light minutes away, so we will not hear anything until at least then.Downinking continues for approx 9 hours, but some images may well be available by then.Lets hope that there were no navigational errors with Cassini slamming into Enceladus!!!!Andrew Brown. Posted by 3488</DIV> Hi 3488!Thanks for the welcome. I was aware about the distance, but you know, sometimes we just can´t wait! Blame lightspeed limits! lol And nooo, cassini do not crash, it would be a massive lost! Well, let´s wait for the images and datas, I´m really hoping that they will find some organical molecules or so. Cheers, Savino  <div class="Discussion_UserSignature"> Look up and feel small! </div>

robnissen · Mar 13, 2008

I am on an email list run by Carolyn Porco (I believe she is in charge of the Enceladous mission).  This was the email she sent yesterday when asked about the results of the flyby:Won't know until early next week what the scientific results are, except for the imaging data which, for this flyby, will be best for the north, and not the south, polar region.

doublehelix · Mar 13, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>I am on an email list run by Carolyn Porco (I believe she is in charge of the Enceladous mission).  This was the email she sent yesterday when asked about the results of the flyby:Won't know until early next week what the scientific results are, except for the imaging data which, for this flyby, will be best for the north, and not the south, polar region.   Posted by robnissen</DIV>That is very cool, robnissen.  Keep us updated if you can!  <div class="Discussion_UserSignature"> doublehelix, Community Manager Imaginova </div>

3488 · Mar 13, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>That is very cool, robnissen.  Keep us updated if you can!  Posted by doublehelix</DIV>I too am on Carolyn Porco's the E-Mail run.I too will provide updates.I've posted an update with images & links on the Cassini thread, as that seemed to generate 'more traffic'.Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

doublehelix · Mar 13, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>I too am on Carolyn Porco's the E-Mail run.I too will provide updates.I've posted an update with images & links on the Cassini thread, as that seemed to generate 'more traffic'.Andrew Brown. Posted by 3488</DIV>Yes, yes!  Updates from you too, Andrew, would be super!  I'll check the Cassini thread as well.-dh   <div class="Discussion_UserSignature"> doublehelix, Community Manager Imaginova </div>

paulscottanderson · Mar 16, 2008

The Cassini team is hinting at some exciting findings: http://blogs.nasa.gov/cm/blog/Enceladus%20Flyby/posts/post_1205608134918.html “It's been a whirlwind here at JPL as the data from the Enceladus flyby comes pouring in, and we scientists have been doing our thing... culling through it all! Sometimes there's so much to choose from that I feel like a kid in a candy story. There is much excited email chatter among the many Cassini teams, all suggesting awesome findings. These first-looks are being matured by the team members, and we have begun to share and compare results.” “As soon as possible in the week or two ahead, we will be able to announce the preliminary results to the world. Until then, I'm waiting like the rest of you are for these data sets to be analyzed, since the first-looks are looking so great! Stay tuned for some Earth-shaking -- I mean moon-shaking -- results!” Paul _________________ The Meridiani Journal a chronicle of planetary exploration http://web.mac.com/meridianijournal <div class="Discussion_UserSignature"> -----------------The Meridiani Journal a chronicle of planetary exploration web.me.com/meridianijournal </div>

3488 · Mar 16, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>The Cassini team is hinting at some exciting findings: http://blogs.nasa.gov/cm/blog/Enceladus%20Flyby/posts/post_1205608134918.html “It's been a whirlwind here at JPL as the data from the Enceladus flyby comes pouring in, and we scientists have been doing our thing... culling through it all! Sometimes there's so much to choose from that I feel like a kid in a candy story. There is much excited email chatter among the many Cassini teams, all suggesting awesome findings. These first-looks are being matured by the team members, and we have begun to share and compare results.” “As soon as possible in the week or two ahead, we will be able to announce the preliminary results to the world. Until then, I'm waiting like the rest of you are for these data sets to be analyzed, since the first-looks are looking so great! Stay tuned for some Earth-shaking -- I mean moon-shaking -- results!” Paul _________________ The Meridiani Journal a chronicle of planetary exploration http://web.mac.com/meridianijournal Posted by paulscottanderson</DIV>Cheers paulscottanderson.I can't bloody wait!!!! Cheers for the heads up that some VERY interesting stuff has been found. The loss of the CDA was not a huge problem as the most important instrumentation used IMO worked perfectly. Most of the updates including spin0's excellent work is on the Cassini thread, as that particular thread appeared to generate more response.Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

Enceladus Rev 61 brush pass Wednesday 12th March 2008.

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