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A 5.7 Terapixel Mosaic of the Surface of Mars

murray-lab.caltech.edu

31–40 of 64 posts

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#31

Earlier quoted context omitted.

WorldView-3 claims to be 31cm resolution: https://worldview3.digitalglobe.com/

Not public. I don't even see a pricing page, so can assume very pricey.

Also this is appears to be the optical resolution, unrelated to an elevation model.

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#32
post #11

It's quite amazing and simultaneously ridiculous that we have a public 3D model of a distant planet at 5 meters resolution while the best available free and public models of Earth are at 30 meters.

Doesn't google earth use 1 meter resolution in certain areas?

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#34

For anyone who studies Martian geology: What is the deal with the 5km deep gorge extending for 1000's of km around -70.654932°‎, -11.473828°‎? It looks like the planet was almost torn in half. (Turn on "MOLA Topography"-layer to see it)

it's valles marineris https://en.wikipedia.org/wiki/Valles_Marineris

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#35

For anyone who studies Martian geology: What is the deal with the 5km deep gorge extending for 1000's of km around -70.654932°‎, -11.473828°‎? It looks like the planet was almost torn in half. (Turn on "MOLA Topography"-layer to see it)

The largest feature on Mars is so vast that it isn't normally visible: the Northern hemisphere is quite a bit lower than the Southern (1 to 3 km):

https://en.wikipedia.org/wiki/Martian_dichotomy

Edit: Very obvious in Google Maps Mars:

https://www.google.com/mars/

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#36
post #17

Earlier quoted context omitted.

And presumably the atmospheric distortion is much less as well.

it's surface area also a lot smaller

However, the total surface area of Mars is roughly equal to the total land area of Earth.

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#37
post #24
post #21

Earlier quoted context omitted.

Are there photos anywhere? The 3D viewer's just showing black for me. (Viewer itself loaded, but as though no data specified/loaded - except what I assume are different views to jump to listed at the bottom.)

Downloadable dataset here: https://murray-lab.caltech.edu/CTX/V01/tiles/ Please do not hammer the service unnecessarily, it's nice that they offer this publicly so lets not ruin the commons here.

wow a lot of big files, maybe they should publish it over WebTorrent

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#38
post #36
post #17

Earlier quoted context omitted.

it's surface area also a lot smaller

However, the total surface area of Mars is roughly equal to the total land area of Earth.

If I wanted to make a textured globe, you just made my oceans totally smooth. Some of the tallest mountain ranges we have are in the area you just nulled out.

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#39
post #11

It's quite amazing and simultaneously ridiculous that we have a public 3D model of a distant planet at 5 meters resolution while the best available free and public models of Earth are at 30 meters.

Doesn't google earth use 1 meter resolution in certain areas?

Isn't that data from airplanes and not satellites?

Re: A 5.7 Terapixel Mosaic of the Surface of Mars

#40
post #23
post #15

Earlier quoted context omitted.

On top of that isn't the lower resolution on earth more for military reasons than a technical one or is this not the case any more?

Hasn't been really the case since french airbus started offering highres global imagery. If you have deep pockets, you can buy 30cm/px (i.e. order of magnitude better than this Mars dataset) images of pretty much anything.

I wonder if there's any sources for those images that aren't cough restricted. Could be interesting to play with, though maybe not worth paying for.
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