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Project, A pet project of mine....
tedstryk
post Mar 23 2005, 05:33 PM
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I have long had the dream of improving the lone closeup Voyager image of Proteus. Being Neptune's second largest moon, I always thought it a pity we don't have a good view of it. There is one multispectral set, taken from two or three million km, and a few slightly more distant clear filtered shots. But this lone frame is from only 144,000 km, with a resolution of 1.3 km/ pixel. Only Triton and Miranda technically have better resolution coverage (I am ignoring the moons of Saturn and Jupiter here). Problem is that it is terribly underexposed. I just wish there were two frames. It is amazing what you can do to reduce noise.

Here is the raw frame:


Here is the best I have been able to do so far. I have created some artificial masks to act as multiple frame to artificially reduce grain:



Anyone have any tips? I'd be curious to see what others could do with this.

Ted

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Bill Harris
post Mar 25 2005, 02:58 PM
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Good work, Ted. I got the raw image and barely was able to see anything after twiddling with gamma/brightness/contrast.

Of interest, just below center, there appears to be a broad scrape/groove with a 5km boulder at the end. Possibly a low angle, low velocity impact?

Or a cat in the clouds... smile.gif

--Bill


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tedstryk
post Mar 26 2005, 03:26 AM
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There does seem to be a raised area at the end of that groove. Far to big and too flat to be a boulder. I think, though, that the whole feature might be just a strange alignment of craters atop the remnants of previous craters. Sort of like this the way Proteus has a strange resemblace to a decayed tooth in this image, Voyager's lone multispectral set.



QUOTE (Bill Harris @ Mar 25 2005, 02:58 PM)
Good work, Ted.  I got the raw image and barely was able to see anything after twiddling with gamma/brightness/contrast.

Of interest, just below center,  there appears to be a broad scrape/groove with a 5km boulder at the end.  Possibly a low angle, low velocity impact?

Or a cat in the clouds...  smile.gif

--Bill
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