Enceladus E03 Flyby Options

[tedstryk]

http://saturn.jpl.nasa.gov/multimedia/imag...8/N00028164.jpg

This image shows what I am talking about. If you look at the lower right, there seems to be some kind of terrain is at this resolution craterless and appears to be on top of the terrain we are now looking at, even possibly cutting one crater in half. I wonder if E4 will get us coverage of this!

[Guest_Sunspot_*]

Why is there so much missing data on the right hand side?  Can they correct that?

It's not missing - it's interlaced

.....ummmmmmm what does that mean lol

Whenever I saw pictures like that I always assumed it was a problem with the camera lol

[djellison]

Not sure exactly what it means - but if I de-interlace it in photoshop, it goes away

Doug

[Guest_Sunspot_*]

http://www.planetary.org/news/2005/cassini..._peek_0216.html

The images posted above were captured only hours ago. They were posted on the website of the Cassini imaging team as part of a new effort to get images from the most interesting encounters out to the public as quickly as possible. Not all of Cassini's images will be released in this way, but unlike the images available on the Jet Propulsion Laboratory's Cassini raw images website, these so-called "raw preview" images have been processed to remove noise and artifacts caused by imperfections in the camera hardware and electronics.

Lots more HERE

[Stu]

Just staring in awe at this image...

http://ciclops.lpl.arizona.edu/ir_index.php?id=10

("Preview 6")

[volcanopele]

Why is there so much missing data on the right hand side?  Can they correct that?

It's not missing - it's interlaced

.....ummmmmmm what does that mean lol

Whenever I saw pictures like that I always assumed it was a problem with the camera lol

In lossless compression mode, we tell the camera to expect a certain number of bits per line. In this case the entropy in the images combined with their higher bits per pixel caused us to go over that estimate. When that happens, the camera stops reading out every other line and we get truncated lines. Over-estimating is also bad since the bits per pixel is used to estimate our data volume, which is carefully negotiated between the various instrument teams. If we over estimate, we would have to plan for fewer images.

[DEChengst]

Two quick mosaics:

http://paranoid.dechengst.nl/saturn/Enceladus1.jpg

http://paranoid.dechengst.nl/saturn/Enceladus2.jpg

EDIT:

Because I couldn't get the brightness difference between images corrected in a good way, I replaced #2 with a non corrected one. Correcting made one part of the image look good and the other not very good so I decided to go for the best detail in the images and just accept the brightness differences.

These two images show what happens if I do correct for the brightness differences:

http://paranoid.dechengst.nl/saturn/Enceladus2a.jpg
http://paranoid.dechengst.nl/saturn/Enceladus2b.jpg

[erwan]

Thank you DEChengst for Enceladus mosaics. I prefer the uncorrected for brightness version of the mosaic. Have you tried to apply a kind of black to white gradient Y mask to each frames before stitching? Maybe this could help to correct brighness differences? I have try such an analogous method to eliminate "vignetting" in MER pancam images before stitching, with some results...

[djellison]

http://mer.rlproject.com/enc_ir3_g_uv.jpg

http://mer.rlproject.com/enc_narrow_1.jpg

Doug

[Guest_Sunspot_*]

Did they take any images around closest approach? The closest image I could find so far was about 7000 miles.

[volcanopele]

Did they take any images around closest approach? The closest image I could find so far was about 7000 miles.

yes, but they haven't been played back yet. They were supposed to last night but I'm guessing it will carryover to tonight's downlink

[fredk]

Anyone know the geometry of this encounter? We must be seeing Enceladus against the dark side of Saturn in this image: Casini image

Extremely cool!

[alan]

I saw that earlier, the caption said Saturn was in the background.

[Guest_Sunspot_*]

New RAW images posted as Cassini looked back at Enceladus - but no high res images at closest approach Maybe during the next flyby.

[tedstryk]

I think it is more likely that they just haven't been released. During the Iapetus flyby there were missing images on the "raw" page for the longest time.