Trek to Solander Point - Page 6

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hortonheardawho


Posts: 3465

Reply: 101



PostPosted: July 15, 2013 9:26 AM 

Sol 3367 ( Jul 14, 2013 ) 3D of peculiar rock in Botany Bay:

This rock still looks "loopy" in the bright sunlight.

Meanwhile the next drive direction is still eastward - but today's plan ( sol 3368 ) includes a full 360 L1 panorama and no driving.

The sol 3366 long base line pans were sent back only as thumbnails.

I have NO idea what's afoot.

hortonheardawho


Posts: 3465

Reply: 102



PostPosted: July 15, 2013 12:07 PM 

Sol 3367 ( Jul 14, 2013 ) 180 degree panorama of fault lines in Botany Bay:

At least I *think* I see a set of parallel lines running towards Solander Point. I was hoping to spot some slipping along the cracks - but can't convince myself I see any.

pk et al ( rock guys ) do you see any signs of faulting?

Do you think it is just a coincidence that a new rock type ( ropey loops ) is found at this location?

Maybe I need a vacation from Mars?

hortonheardawho


Posts: 3465

Reply: 103



PostPosted: July 17, 2013 8:02 AM 

Sol 3369 ( Jul 16, 2013 ) panorama in the next drive direction in Botany Bay after a 75 meter drive SE:

Another long drive into Endeavour?

Perhaps the plan is to do a deep survey dive into Endeavour before the final approach to Solander Point?

Perhaps hoping to catch a strong breeze to clean the solar panels??

Perhaps looking for a new contact???

Hopefully the next update will clue us in.

pk


Posts: xxx

Reply: 104



PostPosted: July 17, 2013 9:08 AM 

hort - there's an update here.
[link]

hortonheardawho


Posts: 3465

Reply: 105



PostPosted: July 17, 2013 9:57 AM 

Thanks pk for the new update link! I have bookmarked it.

Maybe my reply 97 speculations are not too far off the mark!

hortonheardawho


Posts: 3465

Reply: 106



PostPosted: July 17, 2013 11:02 AM 

Sol 3369 ( Jul 16, 2013 ) 3D in next drive direction in Botany Bay:

Which is the HiRise anomaly: the white piles - or the dark caps on the white piles? Maybe both?

It is now sol 3370 8:45 LST and no drive plan has been posted for today - so no drive today.

Stay tuned!

hortonheardawho


Posts: 3465

Reply: 107



PostPosted: July 18, 2013 10:25 AM 

Sol 3361(Jun 8, 2013 ) enhanced difference false color view from HiRISE of Opportunity in Botany bay, Endeavour crater, Meridiani Plain, Mars.

with a link to the natural color view.

Best viewed in the original size where the scale is 4 pixels / meter.

Today ( sol 3371 ) is a driving day - probably somewhere in the mottled red area NE of Solander Point.

Bill Harris


Posts: 3

Reply: 108



PostPosted: July 18, 2013 12:08 PM 

Crop of Hort's Enhanced Diff HiRISE image with recent Route from "The Fool's Errand" jog to Sol-3369.

Hmmm, think I need to use a different color for the waypoint markers...

hortonheardawho


Posts: 3465

Reply: 109



PostPosted: July 18, 2013 1:10 PM 

Bill, thanks for the info. I fixed your image reference.

It confirms what I thought the route might be.

Er, can you provide a url for "The fool's errand" route map?

Bill Harris


Posts: 3

Reply: 110



PostPosted: July 18, 2013 2:27 PM 

Thanks, P'Bucket "enhanced" their site recently and I had a suspicion that their "new and improved" IMG tags might be flakey. Best to use the direct-link URL with the manual "img /img" tags.

No Route URL as such... Oppy has either been working in one area (Cape York, Shoemaker Bench) or moving post-haste (the Sutherland-Nobby run) that a route map has been impractical. But we've been seeing so many interesting snippets of Geology since Nobby that I've been compelled to work on my own route map. I've gotten the BIG JP2 image file for HiRISE "esp_018701_1775_red" and using HiVIEW do a running cut-and-paste of 100% scale images. Do guesstimates of the location using Pan- and Navcam images, along with peeking at guesstimates by you, Phil Stooke and others. The whole image file is something like 33MB. I need to break it up into rescaled installments and post them.

It's only been in the past few sols that things have gotten interesting, with crossing that fracture zone and slipping down into the bowl of Endeavour. We see many changes. That dark pile of rocks in front of Oppy's Sol-3369 stop coincides with that red area to the East on your enhanced image. I really want to see that spot.

--Bill

Bill Harris


Posts: 3

Reply: 111



PostPosted: July 18, 2013 11:54 PM 

Sol-3364-3369 Route Map, with northern tip of Solander Point at bottom. Source: HiRISE esp_018701_1775_red at a scale of 25cm/pixel.

--Bill

Bill Harris


Posts: 3

Reply: 112



PostPosted: July 19, 2013 8:06 AM 

As far as I could guesstimate, the Sol-3371 drive was about 65m along E17S.

Hopeful MIs in the pipeline with a new named target "Charlie Brown".

--Bill

Bill Harris


Posts: 3

Reply: 113



PostPosted: July 19, 2013 11:57 AM 

New Mission Update from JPL:

"...they decided to use a few of the margin sols accumulated to investigate an area of interesting terrain and gypsum signatures."

[link]

Good. Off a'roving.

And updated JPL Route Map to Sol-3367, in Insipid Colour:

[link]

And a really neat rock from Sol-3371:

These fellas probably have a wondrous story.

--Bill

hortonheardawho


Posts: 3465

Reply: 114



PostPosted: July 19, 2013 3:30 PM 

Looks like today - sol 3372 - ( and the rest of the weekend ) is a data dump day. There is a large backlog of images to be downloaded - some as far back as Cape York!

But still, I'm kind'a surprised that the APXS wasn't plopped down atop the bright rock in reply 113 for looong integration to confirm gypsum. Maybe early next week.

Kye Goodwin


Posts: 1166

Reply: 115



PostPosted: July 19, 2013 3:38 PM 

I'm having a hard time finding any definite feature in Oppy's view of the cape ahead that corresponds to a feature in the HiRise image. I must have my sense of scale all wrong, or something, because I've been at it for half an hour with no luck. Oh well, no doubt this will become clear over the next few sols.

Kye Goodwin


Posts: 1166

Reply: 116



PostPosted: July 19, 2013 4:59 PM 

OK, now I think I've got it. (re my 115) Probably no one else had a problem with this but I'll explain anyway what I had wrong.

The view above is not "end on" to the cape but actually shows almost entirely the outside slope of the cape relative to Endeavour Crater. In the HiRise image the features that look like escarpments along the inside edge of the cape are not visible from Oppy's vantage. From orbit the western (outside) edge of the cape shows a sharp boundary something like the clear boundaries of Cape York, but in the view ahead that boundary corresponds to the most obvious line well up on the hillside, lower to the left and higher to the right, dividing overall brighter ground below and darker above. Intriguing. This arrangement is so different its bound to tell us something new.

Bill Harris


Posts: 3

Reply: 117



PostPosted: July 19, 2013 5:34 PM 

Data dump is good. We get images from it.

"But still, I'm kind'a surprised that the APXS wasn't plopped down atop the bright rock in reply 113"

I wax hopeful that we'll get a Handlens and Scratch Plate reading off if this one:

This flat, light-toned rock appears to be the resistant layer in that layered rock in reply 113. And it certainly appears to be part of a major lithologic unit here.

"I'm having a hard time finding any definite feature in Oppy's view of the cape ahead that corresponds to a feature in the HiRise image."

It's pretty wind-eroded and muted. In a nutshell:

To the left (East) are bluffs, made of a rock that is (erosion) resistant.

The East (left) slope is the updip exposures of the westward-dipping rimrock. Layer upon layer of water- and wind-borne sediment, ejecta, imapctite and lapilli from countless impacts and volcanic deposits (basaltic). All pre-Endeavour "bedrock". There are wind-eroded "flutes" in it that give the appearance of strata at this low angle. Some may be, most probably aren't.

The right (West) slope is probably following the dip of the strata, and not cutting much across it.

And at the base we have the light-toned units of the ubiquitous Meridian Onlap.

Attached is a quick schematic of the Oppy view vs the HiRISE view.

http://www.unmannedspaceflight.com/index.php?act=attach&type=post&id=30365

--Bill

Bill Harris


Posts: 3

Reply: 118



PostPosted: July 19, 2013 5:53 PM 

The view is pretty foreshortened. From this perspective, it looks rather like this:

Wink

Kye Goodwin


Posts: 1166

Reply: 119



PostPosted: July 19, 2013 7:57 PM 

Hi Bill, re your 117, 118, You wrote "And at the base we have the light-toned units of the ubiquitous Meridian Onlap." The boundary of the ubiquitous bright layered rock doesn't seem to be at the base of the cape, like I first assumed looking at the Hirise image. That boundary would be hidden by foreshortening from Oppy's current location but instead it is already plainly visible running diagonally up the slope. Now that I get that, I can see many corresponding features in both images including a crater, obvious in HiRise, but just barely visible to Oppy above the upper (right) end of the boundary line.

Bill Harris


Posts: 3

Reply: 120



PostPosted: July 19, 2013 8:45 PM 

It does indeed look like that. Remember, Botany Bay is somewhat saddle-shaped and Oppy has been making her way _very_slightly_ uphill_ for some time. It's rather like an ant crawling around the bottom of a saucer; everything looks uphill.

Here is a HiRISE Endeavour DTM page:
http://hirise.lpl.arizona.edu/dtm/dtm.php?ID=ESP_018701_1775

And page 51 of this PDF paper has a nice contour of Botany Bay:
http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CC8QFjAA&url=http%3A%2F%2Fshoreline.eng.ohio-state.edu%2Fpublications%2F10thesis_karahayit.pdf&ei=NhPZUcDRIIOl0AXx4IGgDQ&usg=AFQjCNEgkfkCQhVZL0749YOZ_rszrYoEpw&bvm=bv.48705608,d.d2k&cad=rja

--Bill

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