Cassini Spacecraft Enceladus E5 encounter. October 9th, 2008.

3488 · Oct 8, 2008

Tomorrow is the Encleladus 25 KM pass E5 encounter.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 · Oct 8, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Tomorrow is the Encleladus 25 KM pass E5 encounter.Andrew Brown.  Posted by 3488</DIV> Thanx for the reminder. Eye deep in MESSENGER, it has slipped off the radar. <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>

baulten · Oct 8, 2008

25 KM is so amazingly close.  Any idea what type of resolution we'll see?

MeteorWayne · Oct 8, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>25 KM is so amazingly close.  Any idea what type of resolution we'll see? Posted by baulten</DIV> SSCCCRRAAAAAAPPPE

<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 · Oct 8, 2008

Imaging is not a high priority for this pass. I imagine thats because the velocity will be so high it will be hard to take imges in the ambient light.Here's the timeline from Emily Lakdawalla's TPS blog.<table border="0" cellspacing="0" class="info outline_all" id="zebra1"><tbody><tr><th rowspan="2">Date/ Time (UTC)</th><th class="center">Enceladus-88 flyby (October 9, 2008) </th></tr><tr><th>Event</th></tr><tr><td>Oct 9 02:15:00

MeteorWayne · Oct 9, 2008

Enceladus blog; now about 1 hour past closest approach:"CIRS and RADAR can see in the dark and don't care too much about solar illumination, but ISS, UVIS and VIMS usually measure solar light reflected from the surface—so opportunities to measure the wild south pole using these methods are dwindling! "http://blogs.nasa.gov/cm/blog/enceladus/posts/index.html <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>

efron_24 · Oct 9, 2008

Another great night.. as tomorrow there will be another great upload of imageswe live in GREAT times..Oppie on it's way to the Big CraterPhoenix seeing ice and frostMercury being photographed for 95+%and now Enceladus..Every day it is a joy to wake up and see new great material..Its'great to be alive NOW.. these are fantastic times !!!   <div class="Discussion_UserSignature"> </div>

weeman · Oct 9, 2008

16 miles! I will be looking forward to the imagery from the fly-by!   <div class="Discussion_UserSignature"> Techies: We do it in the dark. "Put your hand on a stove for a minute and it seems like an hour. Sit with that special girl for an hour and it seems like a minute. That's relativity." -Albert Einstein </div>

MeteorWayne · Oct 9, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Another great night.. as tomorrow there will be another great upload of imageswe live in GREAT times..Oppie on it's way to the Big CraterPhoenix seeing ice and frostMercury being photographed for 95+%and now Enceladus..Every day it is a joy to wake up and see new great material..Its'great to be alive NOW.. these are fantastic times !!!   Posted by efron_24</DIV> Again, there is only one set of images, and they are well after close approach. This is more of a "sniff and taste" flyby. <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>

Swampcat · Oct 9, 2008

Enceladus taken October 9, 2008 from approximately 496k km away. (IR3, GRN & UV3 filters). <img src="http://sitelife.space.com/ver1.0/Content/images/store/13/2/6d2aa2c6-26fe-4306-a251-c80bce19eeeb.Medium.jpg" alt="" />   <div class="Discussion_UserSignature"> ------------------------------------------------------------------- "I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."Thomas Jefferson </div>

3488 · Oct 9, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Enceladus taken October 9, 2008 from approximately 496k km away. (IR3, GRN & UV3 filters).   Posted by Swampcat</DIV>Thank you very much Swampcat. That is the first decent image I've seen from this encounter. The Saturnshine is most evident on the night side of 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>

efron_24 · Oct 10, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Enceladus taken October 9, 2008 from approximately 496k km away. (IR3, GRN & UV3 filters).   Posted by Swampcat</DIV>what a GREAT image to wake up with..Thank you so much !  <div class="Discussion_UserSignature"> </div>

h2ouniverse · Oct 10, 2008

Copied from Sascha Kempf's writing in: http://blogs.nasa.gov/cm/blog/enceladus/posts/index.html"Everything went great for the Cosmic Dust Analyzer (CDA) during this flyby. We got good data during the entire flyby—before, during and after closest approach. We recorded mass spectra even in the deep plume with no data gaps as far as I can see. <img src="http://blogs.nasa.gov/cm/resource/1001461" border="1" alt="Enceladus, from Oct. 9, 2008, flyby" hspace="10" vspace="10" width="300" height="200" align="left" />The High Rate Data rate count profile shows pronounced peaks at the time we traversed the jets. This data is key for pinning down the structure of the dust jets. None of it would have been possible without an excellent team overseeing the instrument and the team at JPL for flying us through. Now we are looking ahead to an exciting period of evaluation."

MeteorWayne · Oct 10, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Copied from Sascha Kempf's writing in: http://blogs.nasa.gov/cm/blog/enceladus/posts/index.html"Everything went great for the Cosmic Dust Analyzer (CDA) during this flyby. We got good data during the entire flyby—before, during and after closest approach. We recorded mass spectra even in the deep plume with no data gaps as far as I can see. The High Rate Data rate count profile shows pronounced peaks at the time we traversed the jets. This data is key for pinning down the structure of the dust jets. None of it would have been possible without an excellent team overseeing the instrument and the team at JPL for flying us through. Now we are looking ahead to an exciting period of evaluation."  Posted by h2ouniverse</DIV> Is that image from this close encounter? Spectacular!! <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 · Oct 10, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Is that image from this close encounter? Spectacular!! Posted by MeteorWayne</DIV>Hi Wayne, it was from 40,000 KM with the NAC on the ISS. <img src="http://sitelife.space.com/ver1.0/Content/images/store/0/2/60982266-5f98-46c9-a29c-b8d52b4df530.Medium.jpg" alt="" />  Another here. <img src="http://sitelife.space.com/ver1.0/Content/images/store/15/7/1fff7d01-24ce-4727-87c3-93d757a49396.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>

MeteorWayne · Oct 10, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Hi Wayne, it was from 40,000 KM with the NAC on the ISS.  Another here. Andrew Brown. Posted by 3488</DIV> All I can say is WOW. What a great image from that distance. And the shadows really highlighted the "crack". <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>

h2ouniverse · Oct 10, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>All I can say is WOW. What a great image from that distance. And the shadows really highlighted the "crack". Posted by MeteorWayne</DIV> What is a relief is that the Cosmic Dust Analyzer seems to have worked! The previous fly-by was not conclusive. Let's hope this one will deliver!

weeman · Oct 10, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>All I can say is WOW. What a great image from that distance. And the shadows really highlighted the "crack". Posted by MeteorWayne</DIV> Indeed. They are all very beautiful pictures! Especially the one that Swampcat posted, thanks Swampcat

<div class="Discussion_UserSignature"> Techies: We do it in the dark. "Put your hand on a stove for a minute and it seems like an hour. Sit with that special girl for an hour and it seems like a minute. That's relativity." -Albert Einstein </div>

3488 · Oct 10, 2008

I've had a go at enlargening & sharpening up the canyon. <img src="http://sitelife.space.com/ver1.0/Content/images/store/4/4/2414eccf-a2a4-453e-b477-1802f9e49006.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>

nimbus · Oct 11, 2008

Is this the instrument that had failed on the first pass thru the plumes, attempting to 'smell' it, forcing the support team to use other instrumentation for an indirect analysis?  Are we going to find out more about the odds of liquid water below the surface?  <div class="Discussion_UserSignature"> </div>

h2ouniverse · Oct 11, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Is this the instrument that had failed on the first pass thru the plumes, attempting to 'smell' it, forcing the support team to use other instrumentation for an indirect analysis?  Are we going to find out more about the odds of liquid water below the surface?  Posted by nimbus</DIV> That would be tha aim indeed. They had very interesting chemical analyses. But analyzing dust grains (or absence of) will tell provide more clues.

Swampcat · Oct 14, 2008

Enceladus, taken October 9, 2008 from approximately 150k km away (IR3, GRN & UV3 filters):  <img src="http://sitelife.space.com/ver1.0/Content/images/store/6/8/f650c10a-2eb5-462f-88be-27b2ff84e164.Medium.jpg" alt="" />   <div class="Discussion_UserSignature"> ------------------------------------------------------------------- "I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."Thomas Jefferson </div>

3488 · Oct 14, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Enceladus, taken October 9, 2008 from approximately 150k km away (IR3, GRN & UV3 filters):    Posted by Swampcat</DIV>Thanks Swampcat. Quite amazing how the differing filters can make an object look so different. To the human eye, Enceladus is virtually monochrome.http://saturn.jpl.nasa.gov/multimedia/images/raw/casJPGFullS44/N00121344.jpgEnceladus in eclipse in Saturn's shadow.http://saturn.jpl.nasa.gov/multimedia/images/raw/raw-images-details.cfm?feiImageID=170449 <img src="http://sitelife.space.com/ver1.0/Content/images/store/3/8/6345797a-a708-4987-88c3-f18d8e6ca24b.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>

MeteorWayne · Oct 15, 2008

For those that are interested in the subject, please read the last few entries on Emily Lakdawalla's TPS blog.WOW!http://www.planetary.org/blog/ Oct. 14, 2008 | 15:58 PDT | 22:58 UTC <h2 class="sIFR-replaced">DPS meeting: Saturday: Enceladus -- it's cooler than we thought</h2><div class="small">Permalink: http://www.planetary.org/blog/article/00001693/</div> I'll be writing quite a bit about the annual meeting of the Division of Planetary Sciences (DPS) of the American Astronomical Society this week; see this post for an introduction. I got distracted by the fires yesterday, but things are looking less threatening this afternoon, so I'm back to work. John Spencer spoke on the results from the CIRS instrument of the March and August 2008 flybys of Enceladus. CIRS is an infrared sensor that can detect thermal emission from most surfaces in the Saturn system (though some of the surfaces are so cold that the thermal emission occurs at wavelengths longer than CIRS can "see.") How bright a surface appears at these thermal wavelengths correlates with its temperature; it takes some detailed modeling to figure out exactly how brightness correlates with temperature, especially for places like Enceladus where the field of view of CIRS may encompass materials with very different temperatures. In the past, CIRS has shown Enceladus' south pole to be anomalously hot, with some approximate correlation between the hottest areas and the locations of the "tiger stripes" (see here for some background). John opened his talk with a very helpful summary of the eight close Enceladus flybys planned for the three years of 2008 to 2010. Since I can pause the playback of this session (thank you again to the IT magicians at Cornell) I can reproduce it fully here: <table border="0" class="info outline_all"><tbody><tr><th>Date</th><th>Orbit</th><th>Speed (km/s)</th><th>Alt. (km)</th><th>Orbit inc.</th><th>Close approach science emphasis</th></tr><tr><td>March 12, 2008

Swampcat · Oct 15, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Quite amazing how the differing filters can make an object look so different. To the human eye, Enceladus is virtually monochrome.</DIV> Roger that, Andrew.Here's an example from my archives using RED, GRN & BL1 filters. <img src="http://sitelife.space.com/ver1.0/Content/images/store/15/13/efcf7506-a61d-4a06-8dbf-f6b9ad6d0aa7.Medium.jpg" alt="" /> <div class="Discussion_UserSignature"> ------------------------------------------------------------------- "I hold it that a little rebellion now and then is a good thing, and as necessary in the political world as storms in the physical. Unsuccessful rebellions, indeed, generally establish the encroachments on the rights of the people which have produced them. An observation of this truth should render honest republican governors so mild in their punishment of rebellions as not to discourage them too much. It is a medicine necessary for the sound health of government."Thomas Jefferson </div>

Cassini Spacecraft Enceladus E5 encounter. October 9th, 2008.

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