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Clouds, Clouds over Victoria
Astro0
post Oct 12 2006, 10:38 PM
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Here's my take on the Meridiani cloud image.
Attached Image

Desktop image: 333k
Enjoy
Astro0
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glennwsmith
post Oct 13 2006, 02:52 AM
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Astro0, your sky/ground image is gorgeous as well.

Which brings me to an interesting question -- and forgive (and enlighten) me if this has been covered in another thread:

It is fascinating to me how the Martian atmosphere -- which is, what, only 1/100th as dense as earth's ? -- can be so effective in creating the diffusion and softening and atmospheric perspective which we associate with the earth, as opposed to the incredibly harsh images from the surface of the moon. Someone care to enlighten me on this topic, or point me to the relevant thread?
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fredk
post Oct 13 2006, 03:12 AM
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The brightness (and pinkish colour) of the Martian sky is due mostly to the dust in the atmosphere. If there were no dust, the sky would be very dark blue, as you'd expect for such a thin atmosphere.

We actually see the Martian sky brightness and colour vary with the seasons, as there's more dust at certain times of the year (summer, I think).
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ngunn
post Oct 13 2006, 11:36 AM
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QUOTE (Astro0 @ Oct 12 2006, 11:38 PM) *
Here's my take on the Meridiani cloud image.


Astro0 I like that version VERY much - almost exactly as I was seeing it in my head except that I had the colouration somewhat less intense and more greyish (and even I with very primitive means can tweak that).
I feel like I'm learning to breathe the Martian air now.
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general
post Oct 13 2006, 11:50 AM
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QUOTE (jvandriel @ Oct 9 2006, 01:46 PM) *
I know there is a little program for finding the right Sol but i can't find it.

jvandriel


http://personal.strath.ac.uk/a.goddard/timestamp.swf
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jvandriel
post Oct 13 2006, 05:21 PM
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Thanks general,

that is the one I was looking for.

jvandriel
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Tman
post Oct 13 2006, 07:40 PM
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QUOTE (fredk @ Oct 13 2006, 05:12 AM) *
The brightness (and pinkish colour) of the Martian sky is due mostly to the dust in the atmosphere. If there were no dust, the sky would be very dark blue, as you'd expect for such a thin atmosphere.

Awesome pics here!

But something is still misty to me. Shouldn't it be so that on Mars the horizon sight appears in deeper shade of red than around the zenith that gets less reddish/pinkish/... and yet darker (and even a little blue) because of mainly less dust and also less atmosphere in the line of sight?


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ngunn
post Oct 13 2006, 09:40 PM
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QUOTE (Tman @ Oct 13 2006, 08:40 PM) *
Awesome pics here!

But something is still misty to me. Shouldn't it be so that on Mars the horizon sight appears in deeper shade of red than around the zenith that gets less reddish/pinkish/... and yet darker (and even a little blue) because of mainly less dust and also less atmosphere in the line of sight?


My impression from the evidence I've seen and read so far is:- Close to the horizon pinkish/yellowish, think (caucasian) flesh tones. At zenith darker version of same colour, perhaps a tiny bit less yellow and more indigo but only a tiny bit, seldom if ever enough dust clearance to be midnight blue as it would be without dust. Clouds pearly silver. Some noctilucent clouds too.
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dilo
post Oct 13 2006, 09:57 PM
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Wow, Astro0!
cool.gif


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dilo
post Oct 14 2006, 06:24 PM
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I missed to process also Sol949 Michael's projection (now with some desaturation toward zenith...):
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dilo
post Oct 17 2006, 05:57 AM
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QUOTE (mhoward @ Oct 9 2006, 05:04 PM) *
Wow! This gets better and better. Nice job, Ant. Somebody alert APOD!

And someone did:
http://antwrp.gsfc.nasa.gov/apod/ap061017.html
Even though biggest part of the work was made by the 3 guys in the credit list, I contributed to the final version they published with improved colorization.
I asked to add my name in the credit list, hoping isn't too late... rolleyes.gif


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Ant103
post Oct 17 2006, 08:28 AM
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Wow! Incredible!
I'm agree with Dilo, he had contribute to this picture smile.gif


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Reckless
post Oct 17 2006, 08:37 AM
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Dilo your picture (post 40) makes it look like Venus got very close to Mars ohmy.gif
Roy F
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Tesheiner
post Oct 17 2006, 08:37 AM
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Congrats, you did it again! biggrin.gif cool.gif
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ugordan
post Oct 17 2006, 08:37 AM
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Congrats to all involved for making APOD once again!
Sadly, this reminds me again of the difference in "approval" of publishing raw data products between MER and Cassini, but let's not spoil this moment.
Awesome image indeed!


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