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The Peter Pan, 360 degree colour panorama
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post Jul 12 2008, 05:07 PM
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QUOTE (fredk @ Jul 11 2008, 01:29 AM) *
Phil Stooke identified them as feature "C" in the maps in this post. It looks like a crater from orbit.


Thank you very much Fred for your answer & to Phil Stooke for taking the time & trouble to pinning down what we are looking at.

That crater appears to have an interesting polygonal floor. To me it looks more like a Pingo than an impact crater, though it's size appears too large for a pingo, unless they can grow much larger under the 37.8 % gravity?

Please keep up the great & very important work everyone.

Andrew Brown.


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"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.
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jamescanvin
post Jul 12 2008, 09:21 PM
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My final version. Unless I do one with the arm removed, personally I'd rather see someone put the missing part of the arm in!

Full resolution, touched up and with artificial sky.



James


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Ant103
post Jul 13 2008, 01:04 PM
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Hi James,

Do you have trouble with your website. I'm unable to view your panorama, and when I go to your blog, I see a page without CSS forming and no images. It's me or … ?
I really want to see your panoramic picture smile.gif.


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jekbradbury
post Jul 13 2008, 02:36 PM
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Here is a new version of my spinning polar pan applet:

Peter Pan Java Applet

Click to zoom
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jamescanvin
post Jul 14 2008, 08:24 AM
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To those of you that have had problems accessing my site - just try again.

I'm on a cheap host and have had a lot of visitors in the last 48 hours. I think the problems really started when a direct link to the large jpg itself was on the front page of digg for a time yesterday. ohmy.gif I'm just glad that it didn't coincide with the time it was on the front page of MSNBC, which brought over 25000 hits in just 5-6 hours on Saturday.

James


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jamescanvin
post Jul 14 2008, 04:31 PM
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Well it made my computer think for a while but in the end it has managed to churn out a huge polar version of the Peter Pan.



(Smaller versions available as well smile.gif)


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Guest_Oersted_*
post Jul 14 2008, 05:24 PM
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Guests






Wonderful panorama, woohoo!

A few aesthetic comments:

- we really need that arm to extend out to the edge of the image, blotting out a bit of fake sky is no issue.

- I also definitely vote for the panorama to keep the arm. It is true that it obscures a tiny bit of the horizon, but let's face it: one bit of this landscape is pretty much like any other bit, so not much harm is done. The arm is very necessary to include in the pan, it is after all the main instrument of the mission!

- the area immediately around the arm needs to be brightened a tiny bit (obvious from the thumbnail). There's also another splotch near the middle that seems a bit too dark.
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Guest_Oersted_*
post Jul 14 2008, 06:47 PM
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Guests






Woohoo again! - I just noticed you made mainstream internet media James:

http://cosmiclog.msnbc.msn.com/archive/200...11/1195385.aspx

Cosmic Log by Alan Boyle is one of my favourite science blogs. Great to see the exposure for you and for UMSF and Emily as well.
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jamescanvin
post Jul 14 2008, 07:14 PM
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Yeah, we talked about that on the Published Images thread. I'm very proud that it was actually the lead image on the front page of a major news site for most of Saturday.

And it was great exposure for all mentioned, I've had tens of thousands of hits and many positive comments. smile.gif


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punkboi
post Jul 14 2008, 07:22 PM
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Thanks for work, James. This image is now hangin' on my wall... smile.gif


Attached thumbnail(s)
Attached Image
 


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ugordan
post Jul 14 2008, 08:14 PM
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Once again, outstanding work, James!

I hope you don't mind me tweaking your colors very slightly:


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Juramike
post Jul 17 2008, 12:03 PM
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James Canvin's polar projection overlaid on a false color HiRISE image:


Attached Image



Features at the 5 m distance ring from the lander mast have been coordinated.

It is interesting is that by comparing to wider range HiRISE false color views (Sol 3 and onwards, Post 47, link here), it indicates that most of what we are seeing (at least out to 20 m, which is close to the visible horizon in the mosaics) at the surface has been slightly altered by the lander blast. In most of the visible fore- and mid-ground, the "poofy dust" has been blasted.

-Mike


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Juramike
post Jul 18 2008, 03:42 AM
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From the HiRISE images it appears that the local terrain around Phoenix has been significantly darkened. I was curious how to correct the view for a "pre-landing" (read pre-retro blast) view.

I used the IRB[=RGB] images hosted on Emily's blog (permalink) to calculate the darkening effect in the local area around Phoenix.

I selected two representative areas in the HiRISE images, one near the Phoenix spacecraft (inside the blast zone), the other beyond the obvious blast zone in the false color image. Both areas needed to be fairly uniform (and easy to find) in the images. They correspond to the central section of the smaller polygons.

Attached Image


Next, I used the selected zone Histogram function in Photoshop to find the average brightness values (on a 0-256 unit scale) of the pixels inside the representative zones for each channel image. Note that the differences in the I[R] and B[BG] channels are within the standard deviation of the values.

Attached Image
Attached Image
Attached Image


Figuring the difference as a function of the measured brightness, I *think* this is how to correct the view of the Phoenix mosaic to the pre-landing colors
These numbers are in reference to the HiRISE instrument detector response in the IRB channels, not to the Phoenix imaging camera!


Attached Image


To correct the Phoenix surface mosaic to pre-landing colors:
  • Add 5% to the IR brightness
  • Add 11% to the Red brightness
  • Add 15% to the Blue-Green brightness


-Mike


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Ant103
post Jul 19 2008, 03:37 PM
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Hi,

From the great James Canvin's Peter Pan, Ive added an full synthetic sky to show the sun in approximative place at 12:00 of the landing site, with its elevation at this season. And this is for showing the way martian sky could be. Hope you will like it, in particulary James smile.gif.

Without clouds

Hires 6 Mo : http://www.db-prods.net/blog/wp-content/up...lsky-v2-web.jpg

And with clouds

Hires 6 Mo : http://www.db-prods.net/blog/wp-content/up...-clouds-web.jpg


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jamescanvin
post Jul 19 2008, 03:54 PM
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Nice. smile.gif

I don't understand the sun position though, wouldn't it be due south at 12:00?

James


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