Images of Saturn and its Moons

tom_hobbes · May 4, 2006

Here's a very interesting article about the dunes. http://uanews.org/cgi-bin/WebObjects/UANews.woa/16/wa/MainStoryDetails?ArticleID=12614 <div class="Discussion_UserSignature"> I wish I could remember But my selective memory Won't let me - Mark Oliver Everett </div>

rlb2 · May 5, 2006

MichaelMozina and Tom_Hobbes Thanks for the link, it’s getting interesting especially the tidal effects, don't know if one of my posts preaching about the tidal forces of Earth / moon vs. Saturn / Titan before Cassini is still on here but I will try to find it. Here is some of what was said at: http://www.spaceref.com/news/viewpr.html?pid=19772 Until a couple of years ago, scientists thought the dark equatorial regions of Titan might be liquid oceans. New radar evidence shows they are seas -- but seas of sand dunes like those in the Arabian or Namibian Deserts, a University of Arizona member of the Cassini radar team and colleagues report in Science (May 5). Radar images taken when the Cassini spacecraft flew by Titan last October show dunes 330 feet (100 meters) high that run parallel to each other for hundreds of miles at Titan's equator. One dune field runs more than 930 miles (1500 km) long, said Ralph Lorenz of UA's Lunar and Planetary Laboratory. "It's bizarre," Lorenz said. "These images from a moon of Saturn look just like radar images of Namibia or Arabia. Titan's atmosphere is thicker than Earth's, its gravity is lower, its sand is certainly different -- everything is different except for the physical process that forms the dunes and resulting landscape." Ten years ago, scientists believed that Saturn's moon Titan is too far from the sun to have solar-driven surface winds powerful enough to sculpt sand dunes. They also theorized that the dark regions at Titan's equator might be liquid ethane oceans that would trap sand. But researchers have since learned that Saturn's powerful gravity creates significant tides in Titan's atmosphere. Saturn's tidal effect on Titan is roughly 400 times greater than our moon's tidal pull on Earth. As first seen in circulation models a couple of <div class="Discussion_UserSignature"> Ron Bennett </div>

robnissen · May 5, 2006

Very cool. The most interesting thing to me in the video was the fact that they identified hydrocarbons that have never been made in a lab (which, I assume, means have never been seen on earth). I wonder if there will be any attempt to duplicate those hydrocarbons in some low temperature lab?

Swampcat · May 6, 2006

Enceladus. This color composite was put together from images taken May 3 from approximately 1,949,000 km away. IR1, GRN and UV3 filters. <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>

Swampcat · May 6, 2006

This image of Dione was taken May 5 from approximately 2,834,000 km. RED, GRN & BL1 filters. <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>

thematrix606 · May 28, 2006

I'm not sure if this was posted, but I came across this interesting website : http://www.enterprisemission.com/moon1.htm It does research on how Iapetus could not be so natural as everyone though... interesting read...

telfrow · May 28, 2006

Mr. Hoagland's assertions concerning Iapetus have been discussed previously in a number of other threads. As you can see from the title of this thread, it has been specifically created to post images of Saturn and its moons. If you'd like to discuss Mr. Hoagland's assertions concerning Iapetus, feel free to open a new thread in SETI or Phenomena, or add post in one of the existing threads. Thanks. <div class="Discussion_UserSignature"> Made weak by time and fate, but strong in will to strive, to seek, to find and not to yeild. - Tennyson </div>

rlb2 · May 29, 2006

This was sent to me through the mail by "The Shadow" and I thought I would share it with you. **PM posted without permission and against forum policy - deleted** Note this was the first warning by a moderator I have officially received on posting images size since I became a member 4 months after space.com started this message board years ago. I have been asked before by a few people to reduce the size of my images, so I reduced the size to what I thought would fit and not disrupt the text posted thoughts. My browser works fine without disrupting the text with the current size of the images I have posted at 850 pixels. Because of this new development I will drastically reduce posting images here because I cant see reducing the size of the original down any more then what I am doing right now. Thanks to all those people who have supported me in the past and who still give there support today. Ron <div class="Discussion_UserSignature"> Ron Bennett </div>

silylene old · May 29, 2006

RLB, that is really too bad. I have always thoroughly enjoyed your posts, and have opened them up first of all. Your contributions are the fine example of why I continue to come to this forum. 850 pixels works just fine on my monitor, with lots of room to spare. Frankly, people ought to set their screen size to at least 1024x768, and should set their browser that they don't have icons running up and down the left and right margins. I cannot imagine why anyone, here in the year 2006, still has a computer incapable of going beyond 800x600. I didn't think such computers with such awful graphics capability have even been manufactured since the last decade. Too bad we have to dumb down our pictures to the lowest common denominator of graphics setting and computer competency. And it's too bad in doing so, we piss off one of the best contributors of graphical content to the SDC forums. I think the tone of Shadow's form letter (?) was unnecessarily harsh. And mods, I do think you are over-moderating again. <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center">- - - - - - - - - - - - - - - - - - - - - - </div><div class="Discussion_UserSignature" align="center">I really, really, really miss the "first unread post" function. </div> </div>

TheShadow · May 29, 2006

I don’t see what the problem is. Often the images posted here are only representative of the original anyhow, with a link easily providing the full sized image to anyone who wants more detail. Depending on the Browser used, and depending on the Brower settings (i.e. people with poor eyesight), large images can make reading and viewing the thread very inconvenient. And for those who have selected 30, 40, 50 or more posts per page, it can have that effect on most of a thread. The same goes for long URLs which can extend out to more than twice the widow width. <div class="Discussion_UserSignature"> Who knows what evil lurks in the hearts of men, the Shadow knows. </div>

silylene old · May 29, 2006

ThShadow, I would rather scroll horizontally, and have good content, as opposed to no content. And as I pointed out, you offended on of our best forum contributors, for essentially no reason. And, I still stand with my position that we should not be catering to those with 800x600 graphics. Cripes, this is the 21st century. <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center">- - - - - - - - - - - - - - - - - - - - - - </div><div class="Discussion_UserSignature" align="center">I really, really, really miss the "first unread post" function. </div> </div>

TheShadow · May 29, 2006

I was a bit upset when I wrote that message and did word it much more harshly than necessary. For that I apologize to rbl2 and swampcat. But, after having made the request dozens of times (on various forums and various other members) with essentially no compliance, I was a little short of patience. Even rbl2 mentioned that he had been asked in the past to reduce the size of his images, but had not been officially asked. IMO, it should never have been necessary to make it official. That aside, I think it is rather arrogant and callous to discriminate against those who have older computers, poor eyesight, or less sophisticated skills than the rest of us. Be assured the request was not for me. I have cable internet and a high speed computer with four monitors running four different browsers. I have another computer with dual monitors which I may double to four. I can view anything at any resolution I want. However, having the ability to see the forums as some other people do, I choose to try to make the system user-friendly to everyone if possible. For instance, MS Internet Explorer wraps long Urls, so the screen width stays the same. Firefox does not (in the normal settings), so long Urls may push the messages to more than twice the width of a standard 1024x768 monitor or even an SCGA 1280x1024 monitor. That is why my standard message, when I fix long URLs, reads:<ul type="square"> **edited long URL into a link to prevent it from pushing the post outside the limits of some browsers. Please do not post long URL's. Convert them into short links. Come on folks, this isn’t ROCKET SCIENCE**</ul>And yes, I believe it is necessary to “dumb down” to the level of the least proficient or our less wealthy members. Once more, virtually every image can have a link to a higher resolution image. In fact, regardless of the physical size, a 100k image is little more than a “pretty picture” for most, and a “teaser” to those who want do an <div class="Discussion_UserSignature"> Who knows what evil lurks in the hearts of men, the Shadow knows. </div>

silylene old · May 29, 2006

TheShadow: Okies! I appreciate the considerate reply, and look forward to rlb, swampcat and others posting more (properly sized) images to this thread! <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center">- - - - - - - - - - - - - - - - - - - - - - </div><div class="Discussion_UserSignature" align="center">I really, really, really miss the "first unread post" function. </div> </div>

yevaud · May 29, 2006

I must absolutely agree with Shadow here. Once, I used to provide 100,000 word in-depth replies to people. Then I realized that it was only responding to the most sophisticated of the readers, and the rest had to scramble to figure out what was going on. So I ceased and began to provide simplistic, almost topical answers. Same situation here, just in an imagery sense. <div class="Discussion_UserSignature"> Differential Diagnosis: "I am both amused and annoyed that you think I should be less stubborn than you are." </div>

Swampcat · May 30, 2006

"For that I apologize to rbl2 and swampcat." TheShadow, there is no need to apologize to me. In fact, IIRC, I was one of those that long ago suggested that others should refrain from posting large images. Quite some time ago I made it my policy that I would not post images larger than 650 px in any dimension. I have voluntarily stuck to that policy ever since. In nearly every case, I have included a link to the full size, full resolution image. Personally, I have absolutely no problem with the size restriction. Not all visitors to Uplink have the income for the latest equipment. I see no reason to disrupt the board format just because I wish to post a full size, low resolution image when a thumb and a link to a full resolution image works just as well if not better. <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>

Swampcat · May 30, 2006

...and look forward to rlb, swampcat and others posting more (properly sized) images to this thread!" We're in somewhat of a lull right now. Color images from Cassini and the MERs have been rather spotty lately. Spirit is putting together the McMurdo Pan. Currently they have about 15 of the 27 vertical slices of the full pan. Originally, I was going to wait until they completed the pan for a complete picture, but I may change my mind since it is taking them a long time to complete it. Opportunity has taken very few color filter images for some time now (excluding the IR and UV pairs). I expect things to pick up as Oppy gets closer to Victoria Crater within the next month. There have been a few color images from Cassini, but they're nothing to jump up and down about so I haven't posted them. Just thought I'd let everyone know what's happening. <img src="/images/icons/smile.gif" /> <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>

spacehappy · May 30, 2006

Hi folks This is kind of funny. No harm to swampcat, I do like his Saturn images over his Mars images but I always thought swampcat was "metalavenger" alias "The Shadow" I still think that way today I hope it isn't true but that was a neutral observation on my part. Just as swamcat is good at Saturn images rlb2 is great at Mars MER images. If rlb2 leaves, it gives me very little reason to visit here, his images are far sharper and more accurate only (5percent to 10 percent iron oxide in the Martian dust) red-looking, on average than any other representative of the MER rovers images that I have seen, the Viking (an analog) system and the Pathfinder missions shown the rogalith to be more silicon color-like, orange-ish brown. Looking at Cornels images are like having a 200 /200 vision, very blurry. If rlb2 leaves then I have very little reason to visit here anymore except to catch Swampcats (?) Saturn images.

telfrow · May 30, 2006

I always thought swampcat was "metalavenger" alias "The Shadow" I still think that way today I hope it isn't true... It isn't. <div class="Discussion_UserSignature"> Made weak by time and fate, but strong in will to strive, to seek, to find and not to yeild. - Tennyson </div>

Swampcat · May 31, 2006

"I always thought swampcat was 'metalavenger' alias 'The Shadow'" To quote you, "This is kind of funny." How you came to that conclusion is a mystery. First of all, thanks for the compliments on the Cassini images, but I would point out that anyone with Photoshop or Paint Shop Pro could put them together. The hardest part is registering the colors, but generally there is little other processing required. Secondly, as far as the MER images are concerned, I believe my color interpretation is fairly close to what I have seen from the majority of others who have the right equipment, software and knowledge for the job. I make no other claims. I would welcome any discussions on the ambient color of the Martian landscape. As far as the sharpness is concerned, you should try to understand that there is only so much information in a raw image. Using a software sharpening function is not improving the accuracy of the image. It is actually adding information that was not in the original. There is a reason why the color images from JPL and other places are somewhat blurry when compared to over-sharpened amateur efforts. I could say more, but I'm not interested in getting into a public pi$$ing match with anyone. There is a value to PMs that some don't appreciate. I'll leave it at that. <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>

Swampcat · May 31, 2006

"I see the merits on both sides in this issue, but it seems that the 100k limit/ content restrictions are pretty effective already." The 100k limit does not affect the physical size of the image on the screen. The 100k limit specifically impacts the quality of the image. A 1024x1024 image at 100k is not going to have the same quality as a 1024x1024 image at 477kb or whatever, though the difference may only show up at greater than 1:1 zoom level. I could post a 1024x1024 image on Uplink after increasing the compression to get under 100k (losing content in the process) or I can post a smaller image with a link to a full resolution, uncompressed version with full content. "...this seems a specious argument - rlb is hardly disruptive..." You misunderstand. I said "disrupt the board format." <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>

abq_farside · May 31, 2006

I like all the images posted here. It is nice to have one place to come to see all those amazing images. If you (the generic you) are going to post on a public forum, you should expect to be criticized by somebody. It is too bad that somebody had to pick up their toys and go home mad. Seems a little childish too me. <div class="Discussion_UserSignature"> Don't let who you are keep you from becoming who you want to be! </div>

chew_on_this · May 31, 2006

That's nice. Another quality poster driven off by an overzealous nit-picking mod. Good job, keep up the good work.

Swampcat · May 31, 2006

"It is too bad that somebody had to pick up their toys and go home mad. Seems a little childish too me." I couldn't agree more. Unfortunately it has happened before...and will probably happen again. <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>

TheShadow · May 31, 2006

To clarify: rbl2 said he intended to reduce the number of images he posts here as a result of the size limit. According to the messages I have received, if he leaves it will not be because of that. What he appears to be angry about is the rules about Private Messages. We have two rules about PMs. One is that everyone be capable of receiving PMs. Apparently he believes that all messages be posted on the open forum. The reason we sometimes use PMs is to prevent disruption and derailing of the thread. This thread is a good example of that. The second rule is that PMs, or significant portions of them, are not to be posted on the open forums without the permission of the sender. The “P” in PM stands for “Private”, and that is exactly what it means. There have been several discussions on that specifically, and several members have been banned when they continued to post PMs after being warned. Rbl2 is still a member here. He posted a PM on this thread, and I deleted only the PM. He posted the PM again along with other comments, and it was deleted (not by me). That is the reason he left (if he did indeed leave). So please try not to confuse the issues. The rules about PMs have been around a long time, and have been discussed before. Those rules are there for a reason, and they are not going to change. <div class="Discussion_UserSignature"> Who knows what evil lurks in the hearts of men, the Shadow knows. </div>

chew_on_this · May 31, 2006

Not the impression I got from his post.

Images of Saturn and its Moons

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