It’s summer again in the southern hemisphere of Mars, so we’re continuing our mosaic of the landing ellipse for the lost Mars Polar Lander. ESP_013368_1035 was the first of the new images to be released, and we’ve gotten a lot of people asking where to send their candidates. You can either contact us directly, or add to the comments in our previous blog post about the search.

The Unmanned Spaceflight forums have a long discussion on the previous search efforts. Many candidates were proposed, and the community’s discussion about them is quite enlightening.

Emily Lakdawalla at the Planetary Society also started a coordinated search effort last year. I don’t know if that effort is still ongoing, but her page on how to use HiRISE images in the search is still a great resource. It includes examples of known hardware, cosmic ray hits and other artifacts, and more tips on searching.

In addition to the list of images on the previous blog entry, these new images have been released: (we’ll try to keep this list up to date as more are released)

• ESP_013368_1035
• ESP_013078_1030
• ESP_013223_1025
• ESP_013289_1035
• ESP_013566_1025
• ESP_013500_1035
• ESP_013711_1030
• ESP_013724_1030
• ESP_013935_1030
• ESP_013790_1035
• ESP_014001_1040
• ESP_014080_1040

Thanks for all your interest, and good luck searching!

9/2/09: ETA new images released in September PDS release.

Last week was the third landing site selection workshop for MSL, the Mars Science Laboratory. The workshop has been well covered in other blogs. If you’re unfamiliar with the seven sites up for consideration, the Martian Chronicles has posted excellent summaries of each site, starting with Miyamoto Crater and working through Gale Crater.

Most of the presentations from the workshop have also been posted here. It’s rare to see one without some HiRISE images!

Here at HiRISE, we are interested in this for several reasons – not only are some of our team members involved in the site selection, but HiRISE data have been integral to the process. HiRISE images have been used to study the small-scale geology of the sites, which is very powerful when combined with CRISM and other data sets to determine composition and mineralogy. HiRISE data has also provided calculations of the slopes and rock abundances around the landing sites, both of which are critical for the safety of the lander. We’ve been doing reconnaissance (the R in MRO!) of all of these sites since we started our primary mission! Here are some of the data we’ve produced for the MSL project.

• Lots of images! (links to a search for ‘MSL’ in our catalog; you can also search for the individual site names)
• Anaglyphs (red-blue 3-d of stereo pairs – these are so fun! )
• Digital Elevation Models (DEMs), which are painstakingly built from our stereo paired images. (This site doesn’t have any MSL DEMs posted yet, but they should be coming soon!)

I know people here have their favorites among these seven sites – what’s yours?

It seems like we’ve been preparing for the Phoenix mission for such a long time – and now it’s finally close to landing day! T-6 days according to our countdown clock! Things are getting pretty crazy here, and I thought a little overview of how the HiRISE team is supporting the Phoenix mission would be useful.

We’ve been imaging the northern plains for Phoenix since we started our mission (here’s a bunch of reconnaissance images on our website). The first images we got back showed lots of scary boulders (a close-up of one of our Transition images shown to the right), so we sampled other areas and searched for a relatively boulder-free landing spot. The area the Phoenix team finally chose is being called the “Green Valley“, not because of the “green light = safe to go” connotation, but rather because some geological maps made of the area happened to use green as the color for the valley. Perhaps coincidentally, Green Valley is also a town near Tucson, where both Phoenix and HiRISE are based. Whatever the reason, I like that the name has a lovely calm, comforting feel.

Once the Phoenix team picked out their landing site, we worked on a high-resolution mosaic of the entire 3-sigma landing ellipse (”3-sigma” means there is a 99% probability it will land within this area; see this great blog entry on landing ellipses at the Planetary Society). The Phoenix landing ellipse is shown to the left, along with the footprints of a number of HiRISE images. (This was before we were quite done with the mosaic.) These images have helped the Phoenix team characterize the regional geology and assess the safety of the landing site.

In addition to scouting landing sites, we’re also going to be involved with Phoenix during its prime mission on the ground. We’ve been planning and practicing several different ways of cooperating: (more…)

You may have read that, late last year, the list of candidate landing sites for the next mission to be launched to Mars (the Mars Science Laboratory) was narrowed to six. HiRISE and other MRO instruments play a critical part in the selection process. MRO scientists at JPL put together a short presentation to show these six sites for outreach purposes (thanks!). I’m putting it up here in online form (i.e. blame me if it doesn’t work).

(more…)