if you run a decent resolution, just set as desktop and then select center image instead of stretch image. at 16x12, it looks great, the rings are exactly in the picture. I guess it would work decently at 12x10 but any less and you'd have to resize it.
I absolutely, positively believe that sentient aliens already exist, but to be able to notice us possibly hundreds of lightyears away means that they have technology that's scary, quite frankly. I wonder if other intelligent lifeforms would ponder what the meaning of life was..
dennilfloss
Past Lifer 1957-2014 In Memoriam
That is an awesome pic. Love how blue Earth looks.
I enlarged it and reduced the noise a bit.
http://img154.imageshack.us/img154/3533/iezc3filteredbn5.jpg
BrokenVisage
Lifer
- Jan 29, 2005
- 24,772
- 14
- 81
They won't come here until they detect our first warp signatures.. (i.e. where's Zephram Cochrane when you need him!).
Jeff7
Lifer
- Jan 4, 2001
- 41,596
- 20
- 81
ScottSwingle is correct. The circled dot is Earth.
Closeup at NASA's site. There's even a hint of the Moon in this image.
Jeff7
Lifer
- Jan 4, 2001
- 41,596
- 20
- 81
You drew an arrow to something, not circled.
That could be a star, or perhaps a moon, or just a cosmic ray hit on the CCD. They get plenty of the latter outside the safety of a planet's magnetic field.
They also take 3 exposures, at least, to get approximate RGB color. The Mars Exploration Rovers will take 7-filter images, which are then calibrated and combined for an approximate true-color image. Cassini operates in similar fashion - a B&W CCD with a filter wheel, which can be turned to allow through a number of different wavelengths, from IR to UV.
So that little really blue dot that you pointed out was likely just something that happened to be glinting sunlight while the blue filter was in place.
Example of what I mean. I took raw images (JPEG only, and not calibrated), and combined them into a color composite, and enlarged it 2x. In the time it took for Cassini to take the 3 exposures needed for a color picture, Titan, the considerably larger, more distant moon, shifted slightly, as did Enceladus, though the latter shifted more, as I believe Titan was the target of this image set. Note that there are red, green, and blue edges visible on Enceladus. They aren't as pronounced on Titan, in part due to the way its atmosphere scatters various wavelengths, but they are visible near the sides of the crescent.
Raw JPEGs:
N00049968.jpg
N00049967.jpg
N00049966.jpg
A similar effect occured with Mars Rover Spirit, when it would take color panoramas in the Martian summer. Sometimes a dust devil would move across the image. So Spirit would take an image in red, the dust devil would move a bit, then another picture in green, more dust devil motion, then blue. The result would be at least 3 dust devils (depending on how many filters were being used), one in each color, overlaid on an otherwise normal-looking color image.
I don't think the human brain will ever be capable of realizing exactly how much there actually is out there. It's a mindfvck just thinking about it.
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