Julius
Jul 4 2017, 05:11 AM
Time for another topic, me thinks.
atomoid
Jul 13 2017, 01:43 AM
figuring this "Perseverance Valley" thread should populate with said content...
are we there yet??
Here are some stereo views from
sol4786 images of presumably water-carved topography downslope of the spillway
(ICE didn't deal well with the contrast scope so at left is anaglyph of 3 pairs, crosseye of left portion, crosseye of right portion, at right is a parellel of most lumpy section).
Click to view attachmentClick to view attachmentClick to view attachmentClick to view attachment
Floyd
Jul 13 2017, 11:22 PM
The pancam images for the past several days show a ground texture that looks like it is cemented together and really interesting textures. Maybe some of the image wizards can put these images together for all to see. We won't be getting too much back for a while, but channel already looks very interesting.
atomoid
Jul 14 2017, 12:49 AM
nice to see MI images being taken again
sol4787, these look set up to stitch for stereo pairs so heres the stitch and one of its sub-pairs in crosseye/anaglyph
Click to view attachment Click to view attachment Click to view attachmentClick to view attachment
RoverDriver
Jul 14 2017, 01:57 PM
QUOTE (Floyd @ Jul 13 2017, 03:22 PM)
The pancam images for the past several days show a ground texture that looks like it is cemented together and really interesting textures. Maybe some of the image wizards can put these images together for all to see. We won't be getting too much back for a while, but channel already looks very interesting.
I'm not so sure about the terrain being cemented. The RHAZ show quite visible cleat marks indicating the soil can be compressed by the cleats. To my untrained eye, this looks more like gravel. Anyway, parking brake is set, we even turned the RF wheel a bit to keep things according to MDOT (Martian Department of Transportation) regulations. See yoou in a couple of weeks.
Paolo
Floyd
Jul 16 2017, 12:39 PM
OK Maybe not cemented, but some of these slabs look polished--almost like glacial polish. Does this look like polish by running water to any of you?
PDP8E
Jul 16 2017, 03:27 PM
Hi floyd,
we have seen what a couple of million years of low density Mar's wind can do to 'fluted' rocks.
I think the environment there is alien enough that we cant quite appreciate the processes
On Earth you be hard pressed to find a dozen 'craters' due to fast (compared to mars) erosion (rain, winds, quakes, tectonics, oceans)
These could be stream cobbles or wind eroded ...
I am waiting on Grotzinger .et al to weigh in.
But it sure is fascinating! Awesome image!
See you around town, fellow Bostonian!
monty python
Jul 17 2017, 05:37 AM
That surface does look a little different to my untrained eye. There is work to do here!
atomoid
Jul 17 2017, 09:55 PM
Perseverance Valley indeed seems to differ somewhat significantly in the bedrock and consistency of the soils, comparing relatively similar filter#2 views from
Marathon sol4122 with its more pillowy bedrock and angular shards versus the more pebbly and sheared surface seen here in
Perseverance sol4791.
That observation, at least in this very limited sampling, doesn't completely hold up when perusing a sampling of MI images at Marathon
sol4131 vs Perseverance
sol4787, but still some interesting differences are apparent and despite the better focus and exposure of the more recently acquired MI, it seems like the muddier fines have been cleaned away here. I'm curious whether any of this owes to winds in each locale, inferring that here in Perseverance we might expect better solar panel cleaning events? since if seasonal patterns are consistent the images linked are just about 1 Mars year apart.
marsophile
Jul 18 2017, 03:45 AM
Click to view attachmentDifferent all right. Parallel-eye stereo.
Are there some berries on that grooved fragment? It's hard for me to tell.
serpens
Jul 19 2017, 02:39 AM
Different, but attractive.
nprev
Jul 19 2017, 05:14 AM
Different indeed.
I wonder if we're seeing the effects of a few tens or hundreds of millions of years of wind scouring on harder than usual bedrock.
fredk
Jul 19 2017, 04:31 PM
We're starting to see some clouds as we head towards winter. Here's an navcam animation from 4793:
Click to view attachmentThis is a stretched difference of each frame from the average of the frames.
jvandriel
Jul 23 2017, 06:49 PM
The road ahead.
The Pancam L2 images taken between Sol 4785 and Sol 4793 stitched together.
Jan van Driel
Click to view attachment
PDP8E
Jul 24 2017, 04:42 AM
QUOTE (fredk @ Jul 19 2017, 12:31 PM)
We're starting to see some clouds as we head towards winter. Here's an navcam animation from 4793:
This is a stretched difference of each frame from the average of the frames.
Hi Fred,
The originals have that bright 'half moon' in the lower third of the frames (which I think you chopped off)
What is that bright area?
RoverDriver
Jul 24 2017, 02:02 PM
QUOTE (PDP8E @ Jul 23 2017, 09:42 PM)
Hi Fred,
The originals have that bright 'half moon' in the lower third of the frames (which I think you chopped off)
What is that bright area?
It is caused by the dust of times. ;-) The small hood we have in front optical element only partly occludes the Sun. Therefore, even when the Sun is outside the field of view it will illuminate the dust which causes diffusion and enters the optical path. Most of the dust was accumulated around Sol 1200+ (2007) but during the years the wide have cleaned up the front elements quite a bit.
Paolo
marsophile
Jul 30 2017, 02:07 AM
https://mars.nasa.gov/mer/mission/status.html#opportunityLooks like Oppy has insisted on a two-week vacation during Solar Conjunction!
fredk
Aug 1 2017, 03:20 PM
Catching up on some night sky imaging from 4784. Here's a stack of three frames to increase the S/N by sqrt(3):
Click to view attachmentI don't recognize the field...
Deimos
Aug 1 2017, 04:22 PM
Taurus, just below pointy end of the Hyades. Kinda random. A rare night comm pass allowed free astronomy, but no moons were up. Still useful as practice and will add a night opacity datum..
marsophile
Aug 1 2017, 07:40 PM
http://www.planetary.org/explore/space-top...nce-valley.htmlMonthly MER Update from the Planetary Society. Also has a nice star photo.
I'm wondering what all the proper motion streaks are, especially the sideways ones. Meteors in the Mars atmosphere?
fredk
Aug 1 2017, 08:08 PM
Thanks, Deimos.
Marsophile, the steaks directed from 11 o'clock to 5 o'clock are stars trailing during the exposure. Everything else should be cosmic ray hits.
djellison
Aug 2 2017, 05:38 PM
marsophile
Aug 5 2017, 04:14 AM
Phil Stooke
Aug 5 2017, 06:31 AM
My guess is that it's an erosional texture as seen in the MI images from the same sol.
Phil
monty python
Aug 9 2017, 05:55 AM
I guess, since oppy moved immediately after conjunction, the auto mode reset she had was no big deal.
marsophile
Aug 12 2017, 03:50 AM
http://qt.exploratorium.edu/mars/opportuni...00P1956L0M1.JPGThis image may provide some perspective on the channels and their relationship to the surrounding landscape.
atomoid
Aug 15 2017, 12:31 AM
sol4809 MI stitch, with bonus anaglyph highlighting the obligatory ICE stitching artifacts.
Click to view attachment Click to view attachment
jvandriel
Aug 16 2017, 01:33 PM
The Navcam L0 view on Sol 4816.
Jan van Driel
Click to view attachment
jvandriel
Aug 16 2017, 07:39 PM
Mi cam view taken on Sol 4809-4810.
Jan van Driel
Click to view attachment
Phil Stooke
Aug 16 2017, 10:53 PM
This is Jan's 4816 panorama reprojected into a roughly maplike geometry to give a view of the surroundings. The lower right (southeast) corner is still bad in this version. The tracks cross a small crater.
Phil
Click to view attachment
jhagen
Aug 17 2017, 06:27 PM
Click to view attachmentMy take on the sol 4809 stereo mosaic.
marsophile
Aug 18 2017, 03:44 AM
atomoid
Aug 21 2017, 09:03 PM
PDP8E
Aug 28 2017, 01:25 AM
Oppy is moving down into Perseverance Valley
Cant wait for the explanation about what we are looking at here....
Click to view attachment
monty python
Aug 28 2017, 05:52 AM
What a "groovy" picture.
Phil Stooke
Aug 28 2017, 07:07 PM
I concur. It IS groovy! Also it seems to contain some grooves. A stereo version will be particularly interesting.
Phil
atomoid
Aug 31 2017, 01:37 AM
atomoid
Sep 7 2017, 08:55 PM
atomoid
Sep 8 2017, 11:04 PM
lengthly september edition of the
Planetary.org MER update goes into a lot of detail about driving and energy production challenges... plus a huge 15MB "
Sprained Ankle Panorama" (why so-named?).
I've never heard much discussion regarding the current state of Oppy's battery charge capacity after all these years, here we are almost 14 years in now using workarounds to so many ageing issues, yet (mercifully) there seem no worries with the batteries!
here's a
sol4843 stitch anaglyph and crosseye of one section of the upslope dusk images
Click to view attachment Click to view attachment
fredk
Sep 9 2017, 03:55 AM
QUOTE (atomoid @ Sep 9 2017, 12:04 AM)
(why so-named?).
Maybe because of the LF wheel problem up there?
QUOTE
I've never heard much discussion regarding the current state of Oppy's battery charge capacity after all these years, here we are almost 14 years in now using workarounds to so many ageing issues, yet (mercifully) there seem no worries with the batteries!
Check out some discussion in
this post.
serpens
Sep 25 2017, 12:33 AM
Possibly we are becoming blasé about Opportunity's performance, leaving the astounding achievement of the 45 kilometre mark unremarked. Looks like it is going to be a long slow winter for Opportunity with power generation hovering around 280 Watt hours at this time.
atomoid
Sep 25 2017, 08:23 PM
Thanks for reminding us, so Oppy slogs past another kilometerstone with no fanfare, not even in
Crumpler's latest post from last friday, i think thats equivalent to traversing about 70% around the entire Endeavor ridge, so i guess we got a while before we hit that one, i am perhaps too complacently confident that will happen! to help celebrate here is a stereo of the latest MI pairs from
sol4857.
And thanks fredk, that info about the battery was very illuminating!
Click to view attachmentClick to view attachment
charborob
Sep 27 2017, 03:36 AM
Sol 4859 Lpancam panorama:
fredk
Oct 10 2017, 03:21 PM
This new drive back uphill was discussed in the latest
PS update:QUOTE
One option under consideration is to send the rover back uphill to an area near the first way station where the MER scientists have spotted some interesting bedrock.
“It looks like two different colored, bedrock units in direct proximity,” said Golombek. “One area that we’re imaging shows that one side has rocks of a lighter tone and the other has a browner, darker tone and the two units appear to be separated by what could be a fracture zone or something. It’s all dirt, maybe broken up rock that’s been filled in by sand, or who knows?”
atomoid
Oct 12 2017, 08:31 PM
PDP8E
Oct 15 2017, 08:24 PM
Oppy drove back uphill a bit in Perseverance Valley. Here is a stitch from Sol 4879 (10/15/2017?)
I ran it through a slight rinse in my De-Convolution Machine ...
Click to view attachment
fredk
Oct 19 2017, 06:47 PM
Popping a wheelie with the RR wheel after a short bump on 4883:
Click to view attachment
monty python
Oct 20 2017, 06:33 AM
Wow! That's radical. Don't think I've seen that before. I only see a trail from the wheel on the right. Was it pivoting?
fredk
Oct 20 2017, 03:13 PM
The 4883 drive looks like a very short bump upslope, towards the direction we're looking in the image I posted. We're sitting almost exactly on our tracks from the downslope drive on 4831 (check Phil's map) and the obvious track is from that drive. It's harder to see the track from the other wheels I guess because of the bigger rocks on that side.
James Sorenson
Oct 21 2017, 04:00 AM
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