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Distant vistas, Endeavour, Iazu, and beyond
tim53
post Mar 5 2010, 10:58 PM
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QUOTE (jamescanvin @ Mar 4 2010, 03:35 PM) *
ngunn,

I don't think the distant horizon can be part of Iazu, it just doesn't stretch that far east. Also, it looks more 'hazy' than the rest of Iazu. Looking at Google Mars it does suggest that we should have an horizon about 10km (ish) beyond Endeavour in that direction.

Doug,

I'd love to have a CTX base map of the area. Not sure how much time I'll have to do any further analysis, but here are some ID's of CTX images that would cover all of Endeavour and Iazu.

P13_006135_1789_XN_01S005W
P15_006847_1770_XN_03S005W
P17_007849_1793_XN_00S005W

Stu,

Rui has named everything around here hasn't he? wink.gif

James


My personal favorite is P21_009141_1780_XI_02S005W_080708, because it was taken with a very small emission angle (and is thus nearly perfectly Nadir), and so high-frequency topography is least distorted in this image, compared to others.

I'm working on a new CTX/HiRISE mosaic for my route mapping for the project, and put this CTX mosaic together some time ago (so it doesn't include much of Iazu). At least it's not so big I can't paste it here (I *think* >> edited to add, oops! It's an order of magnitude too big!). Scaled up to match the overlying HiRISE images in something like Photoshop, it's about 100GB, though! Fortunately, Arcmap and Global Mapper don't resample to match the scales.

-Tim.
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Tesheiner
post Mar 6 2010, 09:12 AM
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I've been using most of these images on my route map version. smile.gif
Here's the top left part of it --the so called "context map"-- where I have labelled all background pictures.
Attached Image


There are three CTX images (from left to right: P01_001414_1780_XI_02S005W, P17_007849_1793_XN_00S005W, and P13_006135_1789_XN_01S005W) and basically two HiRISE images (PSP_009141_1780_RED and PSP_010341_1775_RED) plus a tiny bit of HiRISE ESP_011765_1780_RED to cover the area we're right now.

Edit: Now I'm wondering that I should change the old "001414" image. It's the only one with an off-nadir pointing so it doesn't match so well with the other ones.
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Stu
post Mar 6 2010, 12:14 PM
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Just making some new slides for my next talk (thanks for the help, James!), thought some of you might find this useful in making sense of Oppy's horizon view...

Attached Image


Close up of those particular hills here...

http://twitpic.com/16xi9m/full

Crying out for the full 3D view treatment, I'd say... wink.gif


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tim53
post Mar 10 2010, 03:04 AM
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Bopolu on the horizon!

Amazing, since it's so far away. (about 65 km to center of the crater).

-Tim.
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Tesheiner
post Mar 10 2010, 06:55 AM
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Where, where! Oh, that's unfair Tim. smile.gif wink.gif
You have privileged access to the raw images. We here will have to wait for the next exploratorium update in about two hours.
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Stu
post Mar 10 2010, 06:59 AM
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Tim, that's just cruel.

wink.gif


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Tesheiner
post Mar 10 2010, 08:47 AM
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QUOTE (tim53 @ Mar 10 2010, 04:04 AM) *
Bopolu on the horizon!


Here it is!
Attached Image
(Click to enlarge)

Ahh! I got my daily fix. smile.gif
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JohnVV
post Mar 10 2010, 10:29 AM
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nice but that is one noisy image
quick cleaning

[attachment=21002:clean1.png]
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walfy
post Mar 10 2010, 10:55 AM
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I kinda like the noisy image better. Seems the cleaned image has lost a lot of detail.
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ustrax
post Mar 10 2010, 11:36 AM
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QUOTE (Tesheiner @ Mar 10 2010, 08:47 AM) *
Here it is!


Amazing! So many things to name so few words...guess I'll have to invent a new lexicon... smile.gif


--------------------
"Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe
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djellison
post Mar 10 2010, 04:41 PM
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QUOTE (walfy @ Mar 10 2010, 10:55 AM) *
I kinda like the noisy image better. Seems the cleaned image has lost a lot of detail.


FWIW - Calibrated images almost always have less noise than the raw JPG's. That 'detail' you're talking about is most likely noise that shouldn't even be there.
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Phil Stooke
post Mar 10 2010, 06:14 PM
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Here's a different version... worst noise removed and a tweak to the brightness.

Phil

Attached Image


--------------------
... because the Solar System ain't gonna map itself.
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Phil Stooke
post Mar 10 2010, 06:19 PM
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And a stretched version of the topography. Is there something very faint near the right edge?

Phil

Attached Image


--------------------
... because the Solar System ain't gonna map itself.
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JohnVV
post Mar 10 2010, 10:11 PM
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there is always a trade off between noise and detail

gmic dose a good job and so dose a fft

and some of the noise is the jpg artifacts
after fft showing the jpg
[attachment=21011:Screenshot_2.png]

My personal pet peev is the jpg artifacts .the jpg format should be illegal
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ngunn
post Mar 10 2010, 10:45 PM
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QUOTE (Phil Stooke @ Mar 10 2010, 06:19 PM) *
Is there something very faint near the right edge?


Where's fredk?
I think we already see that (and some tiny bits in between) in his post 104.
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