Distant vistas, Endeavour, Iazu, and beyond Options

[djellison]

There is raw data available, but map projected stuff isn't available (and it's not particularly hard, but it is fairly time consuming to make it)

http://viewer.mars.asu.edu/planetview/inst...I_04S006W#start
http://viewer.mars.asu.edu/planetview/inst...1786_XI_01S006W
http://viewer.mars.asu.edu/planetview/inst...I_03S005W#start

A starter for 10

HRSC offers the best stereo usually ( unless a HiRISE or CTX dem exists ) - but CTX imagery is far FAR better than HRSC imagery.

[ngunn]

Well, there they are in the middle one. Thanks Doug. Now - 3D?

[ngunn]

Are you there Nirgal?
Here's the area of interest cropped from the browse version. The original has MUCH more detail.

Attached File(s)

 Miyamoto_SE_rim_crop.pdf ( 58.55K ) Number of downloads: 440

 

[ngunn]

OK we have the Mule Ears identified, but that still leaves 'Rockaway', the nearer feature to the right of them. We've been assuming it's quite close, therefore small, therefore (since it's off the edge of the HiRise) probably unidentifiable with only CTX. However I've been monitoring small changes in the angular separation of the Mule Ears and 'Rockaway' as we move south. The results of some extremely crude and approximate calculations surprised me. I came up with a distance of 9 kilometres. This would make it's diameter about 60m, which should be easy to find on CTX. So I looked for the CTX and checked out what lies about 9km away on a bearing of 198 degrees. Not too far from that position - lo and behold - a small dark spot which appears to have rays. Now I'm only looking at a browse version of the CTX, plus my measurements and calculations are as I say very rough, so I'd appreciate if someone else could check this out.

This would mean the flat horizon we are seeing in front of the Mule Ears and Bopolu is probably Mars-curvature limited, not topography limited, consistent with the contour map. (When I thought 'Rockaway' was much nearer it bothered me that there should be no hill there for it to sit on.)

http://photojournal.jpl.nasa.gov/jpeg/PIA11837.jpg

EDIT It's at the centre of this crop:

Attached thumbnail(s)

 

[fredk]

I agree with your ID of "rockaway". Here's a closer view of it - it looks pretty fresh:

Both the azimuth and the size look right. This crater would subtend about half a degree from our current location, which is what we see. The distance also looks believable, since the horizon on either side of it looks very flat, which suggests it's very far away.

[Tman]

Yes, the azimuth heading matchs perfectly in your image. Great finding! The rim must be pretty developed.
I have an "not suitable for measurements" image with better resolution" that I'dont know from where it came onto my disk". Here the detail:

[Tesheiner]

Looking to the vertical strips on the image I would say that it looks like from CTX.

[Tman]

Yup http://viewer.mars.asu.edu/planetview/inst...1780_XI_02S005W

List http://viewer.mars.asu.edu/planetview/inst...;maxlatitude=-3

[ngunn]

Anyone got the actual distance measured? I only know it approximately from laying a plastic ruler on my monitor screen and using the size of Victoria as a guide.

[fredk]

About 7.5 km from current location to rockaway.

[ngunn]

Thanks

[Tesheiner]

I have an "not suitable for measurements" image with better resolution" that I'dont know from where it came onto my disk". Here the detail:

After reading the latest blog entry from Emily@TPS pointed by Explorer1 at the Concepción thread, I rushed to the HiRISE website to search for the whole picture used at the article and with the following idea in mind: "maybe the 'rockaway' crater is visible on that picture". This new HiRISE image (link here) cover much more land to the left then previous ones, way west of the twins, but unfortunately it misses rockaway by a small fraction.
Here's an image crop at browse resolution to compare with the one used in your post.

[Stu]

Today's vista...

[RokitSiNTst]

Stu, there is another on the horizon of this image 1N323231461EFFAEI4P1977R0M1.JPG (Bopolu, plus the other twin peaks)

[ngunn]

the other twin peaks

Which features are you referring to here and where are they in the image?