Various Recent Enceladus Images
Rather than waiting for NASA or U. Gordan to colorize this recent image of Enceladus against Saturn, I took it upon myself to fake it myself. I usually do not like to do it this way as it potentially misrepresents what the actual colors may look like, but I really think that these faked versions (also referred to as artistic representations) are likely pretty close. What was done was to add colors to the image based upon what other color images of similar conditions have looked like. The only thing that may be off is that the ring shadow colors may have been that Saturn peach (which in shadow looks brown) rather than the blue-green used here. Since other images of Dione shot against Saturn ring-shadows had the blues in them, I thought there was a pretty good chance this did as well. In the interest of telling the truth the originals have also been included.
Turns out U. Gordan did do one as well here.
Of the recent raw images of Enceladus, these had some interesting qualities I thought worth posting. They are more of the over-exposed variety for the purpose of exposing the geysers that have been discovered in the southern regions. I just thought at this further distance some of the images had a different feel to them. I highly recommend clicking on them for the high-res versions as nothing can be seen from the above thumbs.
Additionally, not sure… but I am thinking that third image may include the torus generated by the geysers or is that just a lens distortion of some kind?… anyone? I am thinking it is not an artifact as you can see a shadow of enceladus cutting through it diagonally in the upper-left.
And the wallpaper.
July 11th, 2007 at 9:41 am
Funny you should mention me, I actually colorized one of those images. I don’t normally like doing it as it’s faking it as you put it, but what the hell… I used a previous composite of mine as basis for limb color. It’s posted on UMSF: http://www.unmannedspaceflight.com/index.php?s=&showtopic=4363&view=findpost&p=94044
July 11th, 2007 at 2:27 pm
ha. too funny. damn… yours is better. i forgot the bluer edging…
July 11th, 2007 at 2:41 pm
Well, I did basically _copy_ color from another composite. I had to enlarge the limb 5x to fit it though and I’m not really sure if I fit the hazy limb too well. It’b be great if a blue channel image would finally appear on the raw site (if it was ever actually taken) so we could see what the scene really looked like.
July 11th, 2007 at 2:44 pm
Also, I think you’re right in seeing Enceladus’ shadow on the E ring in the third image. Something similar was visible when that famous eclipse sequence was taken, both at Enceladus and Tethys. The bright band going orthogonally across it would be scattered light in the optics. Not nearly as bad as with the wide-angle camera.
July 11th, 2007 at 9:20 pm
The color image you made is much better resolution. It has no compression noise. Do you get these from the raw images directory on the Cassini site or somewhere else? If you look at mine there is notable jpg artifacts in the darker details.
July 12th, 2007 at 1:01 am
It’s the same raw image, I just tried to remove noise in Photoshop. It smoothed out the blockiness while not killing too much detail.