Help - Search - Members - Calendar
Full Version: New Hrsc Images Up
Unmanned > Mars & Missions > Orbiters > Mars Express & Beagle 2

Pretty highres stuff though.
QUOTE (tedstryk @ Jan 21 2005, 06:53 AM)

If you're talking about the images of Claritas Fossae, they did put hi-res images up. The 3d anaglphy is amazing! Those craters look so cool...and the ridges that show three levels of depth...breathtaking!

Well done ESA! No just post more images per month...

Eric P / MizarKey
The images are high quality, but with resolutions of 62 meters/pixel. They still have none of the advertized 2 meters/pixel stuff.
Recently, Emily Lakdawalla posted a couple of fascinating panoramas from the Mars Express HRSC processed by Justin Cowart. One should note, however, that the "Looking over Mars' north pole" image is a laterally-inverted mirror image of the Martian north pole. Also the caption is not fully correct. Acidalia Planitia is not visible, but on the left-hand side (in our world, not through the looking-glass) is western Utopia Planitia, in the upper right-hand corner is the transition to Terra Sabaea, and around the northern polar cap extending southward on the right-hand side is Vastitas Borealis.
Thanks for the spot. I can't do anything about the information on the blog at this point, but I will be sure to correct the image and update my location notes. The confusion came from using the raw HRSC images, which are mirror flipped for some reason. I must have flipped it twice without realizing it.

During 2013 and early 2014, MEX was performing a series of Phobos flybys and Deimos imaging sequences. During these flybys the spacecraft acquired up-close images of Phobos with the HRSC Super-Resolution channel, which is a 1024x1024px imager embedded in the HRSC's pushbroom system. The pointing isn't as smooth as HRSC, but using machi's deconvolution method I was able to increase the sharpness of these images greatly.

Here's a Phobos flyby on June 29, 2014 built from 6 SRC frames:

Phobos - Mars Express by Justin Cowart, on Flickr

The system has been used to make a good number of Kodak shots, too.

Phobos, Earth and Moon - Mars Express by Justin Cowart, on Flickr
(For some reason this one was stubbornly resistant to deconvolution, maybe stemming from the low S/N ratio of the original image?)

Phobos and Jupiter - Mars Express by Justin Cowart, on Flickr

Phobos and Saturn - Mars Express by Justin Cowart, on Flickr
Fantastic work!
Also nice to see that Saturn is visibly much dimmer than Jupiter; makes perfect sense given the greater distance from our collective light source, but certainly a contrast with the usual illustrations that show all the planets in the same light when lined up.
I found a couple of HRSC images of frost deposits in the southern hemisphere.

First one is some wilderness area in Terra Cimmera (I couldn't find a named feature for nearly a 100km in any direction)

Frost in Terra Cimmera - Mars Express by Justin Cowart, on Flickr

And some heavy frost in Hooke Crater (located on the northern rim of the Argyre Basin)

Frost in Hooke Crater by Justin Cowart, on Flickr
I've been experimenting more with processing high-altitude HRSC two-color (GB) limb scans. I want to emphasize that these aren't geometrically-controlled or accurate color images. Basically I warp the blue channel image to overlay the green channel image, then partially subtract the blue channel image from the green to come up with a synthetic red channel. Since there's a lot of along-track motion between images, the color of the atmospheric haze structure doesn't come out too well, so I either paint it a single color, or maybe paint individual layers if there's enough color information for it. The shape of the limb is distorted in the original images (usually one half will have a different slope than the other), and this is semi-subjectively adjusted so that the horizon fits the outline of a circle of an arbitrary radius while craters near the bottom of the image are more or less round. So don't wander off and try to use these for science tongue.gif

A couple of global shots over Tharsis from the most recent public HRSC release:

Olympus Mons - Mars Express

Tharsis - Mars Express
A couple of south polar views from December '14/January '15 that I stumbled on in the archives:

Aonia Terra/South Pole - Mars Express HRSC

Malea Planum - Mars Express HRSC
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.
Invision Power Board © 2001-2019 Invision Power Services, Inc.