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Neptunian System Imaging
machi
post Oct 11 2010, 09:30 AM
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Neptune from Voyager 2. Color is from images with CH4JS, green and orange filter.
Shadows of three moons are visible.
Second image is with possible interpretation.
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Stu
post Oct 11 2010, 09:32 AM
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Yes!!! smile.gif I was hoping you'd focus your imaging magic towards Neptune!


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machi
post Oct 11 2010, 09:54 AM
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It was only matter of time. smile.gif


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tedstryk
post Oct 11 2010, 09:58 AM
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Beautiful! I have also worked with these images and interpreted the moon you considered Galatea to be Naiad, but other than that I agree with your interpretation.
Edit: One other question: Which color did you use the CH4JS filter for? It is even redder than the orange filter, but from your listing order it seems like you used it as blue.


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machi
post Oct 11 2010, 10:25 AM
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CH4JS (with reduced contrast) was used as red color. Another ones: Orange -> green, green -> blue.
So this is false color, but corrected to approximately true color.


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tedstryk
post Oct 11 2010, 10:44 AM
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That makes good sense. I interpreted too much from the order you listed the filters.


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Ian R
post Oct 11 2010, 04:46 PM
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Aaaahh... Neptune! I recall taping any mention of the Voyager 2 flyby on TV as a rather eager seven year-old.

Great picture Daniel.


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nprev
post Oct 11 2010, 04:54 PM
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ohmy.gif ...wow!


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Stu
post Oct 11 2010, 04:58 PM
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Just so you know Machi, that new image will make its Outreach debut tonight, here in Kendal, in a talk being given to the 10th Kendal Cubs! (all ten of them!) smile.gif


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Ian R
post Oct 11 2010, 08:23 PM
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Are these the famous shadow-casting cirrus clouds, I wonder?

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ngunn
post Oct 11 2010, 08:48 PM
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I can't help noticing similarity between clouds on Titan and the ones in that Voyager view of Neptune. In particular the biggest Neptune cloud with its north-south branch does resemble somewhat the big cloud recently seen on Titan. In general, and in both cases, the clouds cover only a small fraction of the globe and are predominantly in the form of long east-west streaks. Of course so much else about the two worlds is so very different. I have no idea whether the morphological similarity signifies anything interesting.

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machi
post Oct 11 2010, 08:56 PM
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I'm not expert about clouds, so I don't know exactly if it's cirrus, but these are real clouds encircling Neptune's pole.
One of my future image will show this region with higher resolution.


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machi
post Oct 13 2010, 03:08 PM
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Neptune with cirrus clouds swirling around south pole.
Slightly differences in color are caused by different kinds of filtered images (CH4JS, clear, violet and CH4JS, orange, clear).
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antipode
post Oct 13 2010, 09:15 PM
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Really enjoying this thread Machi.

At the time these images were first released I'd been backpacking through Europe for months and had totally forgotten about the Voyager Neptune encounter. One day on the streets of Paris I saw this incredible blue disk staring back at me from a news stand. I remember just standing there staring at it for ages - I just couldn't believe how compelling and unexpected all that atmospheric structure was!

Now - back to that last image. Can I see a small bright/dark vortex thingy at the pole? Might we be looking at a miniature version of Saturn's 'evil eye'?

P

p
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machi
post Oct 13 2010, 10:16 PM
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"Really enjoying this thread"

I am glad to hear that. tongue.gif

"Can I see a small bright/dark vortex thingy at the pole? Might we be looking at a miniature version of Saturn's 'evil eye'?"

Maybe this little animation (1 frame = 5sec real time) give answer:
Attached File(s)
Attached File  NSP25f5s.avi ( 915.82K ) Number of downloads: 910
 


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