Galileo Imagery, I couldn't find a topic not specific to one moon.... Options

[djellison]

False colour? really? I've stretched the saturation to the max in Photoshop on that image, and there's no colour at all, just a slight orange tinge across the entire image.

[machi]

False colour? really? I've stretched the saturation to the max in Photoshop on that image, and there's no colour at all, just a slight orange tinge across the entire image.

It's slightly colored (aproximately brown color). But this is a problem with adjusting colors on different monitors. On my old CRT it looks fine, but on LCD it looks completely different.
I tested this image on LCD and it's colored (try adjusting contrast).

[Phil Stooke]

Since the original mosaic was monochrome, any colour is false! Looks good, though - probably fairly realistic.

Phil

[paxdan]

I believe machi is using false colour to mean artifical colour, not spectral imaging that uses combinations of wavelengths that do not approximate what is seen by the human eye.

[machi]

Full inline quote removed - ADMIN

Right. This is maybe little terminological problem. Color is entirely artificial. How Phil said, for this mosaic multispectral images don't exist.

For comparison, this is multispectral image maked from violet, green and IR images.

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[djellison]

A more appropriate phrase would have been 'colourised' rather than 'false colour'. 'false colour' infers that you made the image from multiple filters.

[ugordan]

Here's my version of the Europa 14ESGLOCOL01 mosaic using all color that was available. A lot of synthetic color at places, the terminator is pretty much only green filter data. Too bad about that huge gouge of missing data at upper left.


Color balance was roughly based on a Cassini RGB image showing pretty much an identical vantage point. Still slightly exaggerated colors, I think.

[CAP-Team]

Nice work!

[tedstryk]

Good work. I primarily stole from the G-1 mosaic to fill that nasty gap.

[ElkGroveDan]

That is a fantastic image. It sure emphasizes the "bloodshot eye" appearance of Europa (but I have to go from memory as it has been years since I went to a college fraternity party).

[nprev]

Really amazing work, G. The long troughs near the terminator really stand out in this view; don't recall seeing them as well in previous global mosaics.

[DrShank]

Really amazing work, G. The long troughs near the terminator really stand out in this view; don't recall seeing them as well in previous global mosaics.

the long troughs are part of a global pattern. several other troughs elsewhere form part of a set of two giant circles
on opposite sides of the moon. They actually match the stress patterns produced if you rotate Europa's floating ice shell
almost 90 degrees (aka polar wander).
check out the story at http://www.lpi.usra.edu/science/schenk/europaCropCircles/

paul

[machi]

Merry Christmas to everyone on the site!

(It's one of the highest resolution mosaic of Europa from Galileo, with resolution around 10 m/pix horizontal. Artificially colorised by average color of this regio (Lat. -8.55;Long. 215))

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[Decepticon]

^ That just made my day! Amazing view.

[algorimancer]

That is really nice. I especially like that sharp boundary between white above and dark below on the big fracture a little above center. I suspect the dark material must be sulfur compounds from Io settling on low areas of the surface, but it almost looks stratigraphic in that spot.