Here's another one for the album:

Yes, of course Stu - go for it!

Here's a very quick-and-rough colour composite using some of the latest raw Cassini imagery:



Ian.

I'd like to thank both Emily and Bill for kindly displaying the Saturn mosaic on the Planetary Society blog and the Riding With Robots website. It certainly makes all of the hours invested in the creation of the image worthwhile!

The wonderful repsonse from the UMSF stalwarts here is also greatly appreciated, and hopefully I will get around to implementing the suggestion that Bjorn made sometime soon. I am only an amateur at this game, with a minimal amount of knowlegde in the image processing field, so I welcome all constructive critiscism from the resident gurus and experts here.

I did see the second mosaic in the Cassini raw directory, but decided against putting that version together since I was so burnt-out from doing the first one. I'm pleased to see that someone else is putting the necessary time and effort needed to make sure that this Saturn portrait gets properly reproduced too.

Finally, Ken, of course you are welcome to use the composite in your lecture - thank you for being such a gentleman to ask permission in the first place. In general, I don't mind at all if people use my work without seeking my approval, but to go that one extra step is certainly a sign of pure class.

Good luck with the lecture!

Ian.

Is this a rogue pixel, or one of the smaller, inner moons?



Ian.

After hours of hard work (don't forget that this is my first ever attempt at producing a colour mosaic on this kind of scale), here is Saturn in all its glory!

http://img442.imageshack.us/my.php?image=s...ianregan6jl.jpg

There are still a few tweaks to be made, of course, and I hope to post the final version at the weekend.

Enjoy!

Ian.

Emily - there's quite a bit of detail in the region of Saturn's terminator, especially near the North pole where there are several bands and lots of clouds visible.



So far so good...

A preview of what I'm working on at the moment...

Ian.

Thanks ugordan. Next to Ted, Bjorn and your good self, I am merely an enthusiastic amateur when it comes to Cassini imagery!

I wonder if the same event caused the dichotomies visible on Dione, Tethys and Rhea (perhaps Iapteus too)?

Ian.

Last of all, with a 'Dodge' filter used on the Lightness channel to bring out detail in the bright areas:



Ian.

...and here's a version with the contrast stretched and the saturation increased:



Ian.

Very nice indeed - here's a quick IR/G/UV composite:



Ian.

Hmm... I wonder if the 'splat' is contemporaneous with the young terrain visible in this Voyager image?

http://photojournal.jpl.nasa.gov/catalog/PIA01397

Ian.

Great image ugordan!

North is to the left in this view, with Penelope in the centre, Melanthius at roughly the 2 o'clock position, and Odysseus on the limb at 10 o'clock.

The 'yellow splat' shows up in several other Cassini and Voyager images of Tethys:

http://photojournal.jpl.nasa.gov/catalog/PIA01392
http://photojournal.jpl.nasa.gov/catalog/PIA08149
http://photojournal.jpl.nasa.gov/catalog/PIA06140

Ian.

That is odd - thought it was my monitor for a split second!

The raw images look OK in comparison:

http://saturn.jpl.nasa.gov/multimedia/imag...8/N00051429.jpg

Great work Thorsten!

Also called: "The Rock Formerly Known as 'Big Bertha'".

These are really great images - my congratulations to everbody involved with HiRISE and MRO.

Ian.

Working on your new book Phil?

The official image release:

http://photojournal.jpl.nasa.gov/catalog/PIA08317

Good catch on the splatter pattern Ed. That certainly does look more like a crater chain from a debris or cometary impact.

Good grief! Is it my imagination, or are there really two sets of grooves in the image that Phil just posted, intersecting at right angles?

How does this tally with the theory that the grooves were produced by interactions between Phobos and debris in orbit around Mars?

Ian.

Ahhhh!

Ted, when are you going to get all of your wonderful images published in book form? Could you perhaps produce something via Lulu.com?

Ian.

Look at the effect Pan is having on the two main ringlets in the Encke division:

Nice shot of Pan in the Encke Division, with its night side illuminated by Saturn-shine:

http://saturn.jpl.nasa.gov/multimedia/imag...5/N00068548.jpg



Ian.

Don't you just love RECORDER.EXE...