Reprocessing Historical Images, Looking for REALLY big challenges? Options

[tedstryk]

Here is the cleaned version of the image. This is exciting for me. I have long wondered what the northern hemispheres of the Uranian satellites look like. This is the view of one, hidden in old data.

[Bob Shaw]

Here is the cleaned version of the image.  This is exciting for me.  I have long wondered what the northern hemispheres of the Uranian satellites look like.  This is the view of one, hidden in old data.

Good work!

[Decepticon]

Is that Ariel?

[Phil Stooke]

Very nice!

This was my version:



I think the Uranus-shine (he typed, trying not to giggle) terminator is further towards the top than Ted suggested in his comment of the scarp.

(PS for anyone interested in other planetshine images: try the MOC images of Phobos)

Phil

[tedstryk]

Excellent image. You are right - the second terminator is farther up the image than I first thought. I have been searching images of Triton and the Uranian moons. I have found some planet-shine in distant Triton crescent images, but they are too distant to be useful. Umbriel shows a hint, but nothing worthwhile. I am trying Miranda, without success so far. I think this Ariel set may be unique.

[tedstryk]

-

[ljk4-1]

Mariner Mars 1969 Final Project Report

Volume 3: Scientific Investigations

http://ntrs.nasa.gov/archive/nasa/casi.ntr..._1971027927.pdf

[edstrick]

"I had not realized the entire set of Mariner 4 matrices were available. "
They're in a volume of the JPL-TR-32-.... series Mariner Mars 1965 Final Project Report <or whatever> volumes. I don't have it, but engineering libraries may. UT Austin's copy was missing by the late 70's.

Boring job?.. That's what OCR is for. Once you have a clean text of 200 lines by 200 samples, it's relatively simple to turn it back into an image. If I had the text, I could do it with software I have at work with a batch command file.

[tedstryk]

I have cleaned up some Oberon imagery...man that is a horrible data set!

[Phil Stooke]

Ted, regarding your very nice Miranda image... I hate to say this, I really do, but there's a problem. The planet is off the image to the top, over zero longitude. So planetshine can't possibly reach the area at the bottom where you show it most clearly. That must be some kind of artifact. Sorry about that.

Phil

[tedstryk]

Actually, it turns out to be neither planetshine nor an artifact. Turns out there was a layer out of alignment in the original stack! It was used at such a low percentage and I skipped my usual step of converting to 16 bits for processing, and so it barely showed through - back to the drawing board!

[tedstryk]

oops

[tedstryk]

I have been playing with Voyager's Enceladus images, since they are the only ones that show the north pole. This is a work in progress. Color is only done for the Voyager 1 image and the closest Voyager 2 image. The first image is from Voyager 1, the rest are from Voyager 2.

[tedstryk]

I have made a color version of the second closest image, and placed it on the left here, with the closest image on the right. Although the resolution isn't quite as good, I think it shows a much prettier view of Enceladus, as well as a good view of North Polar terrain. You may notice that it looks smoother, due to the fact that these images actually fit together well, allowing a pretty good super-resolution effect - in fact, despite being much more distant, there aren't many features I can't see in this mosaic that are resolved in the closer one). Also, except for one clear image, no image in the highest resolution mosaic covered the whole disk....thus the color was done with a mixmatch of filters. The second closest image is a nice, OGV color image (one of my little projects with Voyager is to produce, when possible, OGV, OGB, or OGUV color (in order of preference, but I have to take what is available). The images match Cassini images much better when orange is used instead of green for the red channel.

[tedstryk]

I have come across a source for Pioneer 11 digital data for Io! (I don't actually have it yet, but it is in the pipeland as I understand). More to come in the coming weeks....