Sol 456: Processed EOD 4-tile NavCam, roughly assembled in MS-ICE
Click to view attachment

Article on Nature on Perseverance's current campaign

https://www.nature.com/articles/d41586-022-01543-z

Gigapan - PERSEVERANCE 454
© NASA/JPL-Caltech/MSSS/ASU/NeV-T

The sol 456 circular panorama made from Paul's Navcam composites. Thanks, Paul! Look at that tasty rasher of bacon!

Phil

Click to view attachment

Gigapan - PERSEVERANCE 451-452
© NASA/JPL-Caltech/MSSS/ASU/NeV-T

Whoa! I can see at least two places with reddish soil.
Your recent work on both rovers imagery’s bring something different and very much appreciate Neville.

Panorama taken with Navcam Left on sol 456 at 15:20 LMST. Nice slice of bacon indeed Phil

Close to the 'Bacon Strip' after a drive on Sol 460 (Site 26-470)
Attached are two of the end-of-drive 4-tile NavCam mosaics, giving us a wide view of the 'Strip'.
The mosaics were roughly assembled in MS-ICE

Click to view attachment Click to view attachment

Thanks to Paul's images, here is a circular view of the sol 460 panorama, almost at the bacon strip.

Phil

Click to view attachment

Today, sol 461, we are on the bacon strip. More details later...

Phil

Gigapan - PERSEVERANCE 449
© NASA/JPL-Caltech/MSSS/ASU/NeV-T

Gigapan - PERSEVERANCE 449
© NASA/JPL-Caltech/MSSS/ASU/NeV-T

Not many post-drive NavCams frames available for processing yet, but here's the one that shows the rover on the 'Strip'
4-tile Sol 461 photomosaic roughly assembled in MS-ICE and de-greened in Photoscape (Site 26-630)
I've also added a drive data table extracted from the mission JSON files.
Click to view attachment Click to view attachment

Siltstone?

Sol 456 SuperCam Remote Micro-Imager mosaic no. 1 with Mastcam-Z and Navcam context

Click to view attachment Click to view attachment Click to view attachment

Sol 456 SuperCam Remote Micro-Imager mosaic no. 2 with Mastcam-Z and Navcam context

Click to view attachment Click to view attachment Click to view attachment

Sol 457 SuperCam Remote Micro-Imager mosaic with sol 459 Mastcam-Z and sol457 Navcam context

Click to view attachment Click to view attachment Click to view attachment

Sol 459 SuperCam Remote Micro-Imager mosaic with sol 459 Mastcam-Z and sol457 Navcam context

Click to view attachment Click to view attachment Click to view attachment

Great images, Tau. Thanks!

And with some images from Paul and a bit of black magic, here is a circular view for sol 461. Bringing home the bacon!

Phil

Click to view attachment

Gigapan - PERSEVERANCE 451
© NASA/JPL-Caltech/MSSS/ASU/NeV-T

Sol 459 Mastcam-Z multispectral images of the context of the two SuperCam RMI mosaics in posts #167 and #168
1. Left eye filter 0 (RGB) raw image (link to original raw image)
2. Left eye filters 1 to 6 principal components
3. Right eye infrared filters 1 to 6 principal components (greenish to the right due to filter flatfield inhomogeneities)
4. Same as 3, enlarged, with the two SuperCam mosaics in the brightness channel for detail. Exact match not possible due to parallax between cameras.

1 Click to view attachment . . 2 Click to view attachment . . 3 Click to view attachment . . 4 Click to view attachment

What's that? A piece of hardware lost during descent? A special and rare kind of rock?
1. Enlarged details of Mastcam-Z raw images
2. Mastcam-Z filter 0 RGB enhanced by principal components
3. Anaglyph

Click to view attachment Click to view attachment Click to view attachment

Links to original raw images: link1 link2 link3 link4

Nice Tau. At first sight the rock on the left looks like a contact between siltstone and sandstone deposits, possibly a deltaic upward coarsening succession. Where the silt would have deposited in relation to the delta front would depend in the difference in density between lake water and inflow. The bacon strip should raise a lot of questions/speculation.

Sol 462 SuperCam Remote Micro-Imager mosaic no. 1 with Navcam context

Click to view attachment Click to view attachment

Sol 462 SuperCam Remote Micro-Imager mosaic no. 2 with 10 laser holes and Navcam context

Click to view attachment Click to view attachment

Sol 463 SuperCam Remote Micro-Imager mosaic with 10 laser holes and Navcam context

Click to view attachment Click to view attachment

Gigapan - PERSEVERANCE 456
© NASA/JPL-Caltech/MSSS/ASU/NeV-T

Gigapan - PERSEVERANCE 456
© NASA/JPL-Caltech/MSSS/ASU/NeV-T

A small selection of post drive L-NavCam tiled mosaics after a short drive on sol 464 to site 26/756.

All were roughly assembled in MS-ICE, & de-greened in PhotoScape

Click to view attachment Click to view attachment Click to view attachment

Using a full set of Paul's images, here is a circular view of the sol 464 position.

Phil

Click to view attachment

Sol 464 Mastcam-Z
1. Left eye raw image
2. Left eye filters 1 to 6 multispectral principal components
Judging by the multispectral false colors, the conglomerate in the upper halfth of the image consists of a variety of different rock types an minerals.

Click to view attachment Click to view attachment

Sol 464 SuperCam Remote Micro-Imager mosaic with Mastcam-Z context

Click to view attachment Click to view attachment

Nice to be able to sample the rocks from an entire watershed, not just one site...

Sol 466 SuperCam Remote Micro-Imager mosaic with three laser holes (no context image available yet).
The SuperCam mosaic reminds me of veins of fibrous gypsum in claystone (see second photo) that I found just a few days ago on a small Gipskeuper formation hill in Thuringia.
It would be a nice coincidence if also Perseverance had found a vein of fibrous gypsum.

Click to view attachment Click to view attachment

Interesting rock formations seen on sol 466:
Click to view attachment

Virtually all the white Mars veins and veinlets probably consist of Ca-sulfates, but daily and seasonal temperature and humidity variations can cause apparent amorphization of surface sulfates (Ca-sulfates cycle among gypsum and the less hydrous forms bassanite and anhydrite). Therefore, nice fibrous gypsum crystals are unlikely at the surface. You might find them if you could dig.
dburt

Mastcam-Z Left mosaic made of 123 pictures taken on sol 466 (12 June, 2022) at 12:20 LMST.
Also on Gigapan.

Looking suspiciously like a piece of EDL Hardware (FOD)
Sol 467 - L-MastCam-Z (full zoom)
Click to view attachment

Indeed, it really looks like a piece of multi-layer insulation. See this picture in the JPL shield shop from https://www.nasa.gov/image-feature/jpl/meet...raft-dressmaker

Click to view attachment

Sol 467 Mastcam-Z left eye filter 0 (RGB) color-enhanced image and anaglyph

Click to view attachment Click to view attachment

Edit Deleted size and distance values, have to check my calculations.
Does anybody know the exact distance between neighboring pinholes in the thermal blanket material?

Second edit Here are the results (without guarranty) of stereophotogrammetry again:
The distance from Mastcam-Z to the thermal blanket material is about 10.4 meter. The size of the visible part is about 21 cm.
The distance between neighboring small holes in the material is about 1.25 cm (about half an inch).

But much more interesting than the lost EDL hardware parts are the Martian rocks in a sol 467 Mastcam-Z image,
especially the one with the textured surface in the upper right part of the image.
Is the texture an effect of wind abrasion, or reflects it an internal property of the rock, or both?
Distance to the rock about 4.4 m, size about 2.6 cm (calculation results as usual without guarranty).

Click to view attachment Click to view attachment Click to view attachment

Just to share my calculations regarding the piece of (likely) thermal material that has been imaged: located at ~10.5m, it's 18cm x 10 cm.
Assuming a wind speed of 15 m/s (maximum measured by MEDA as far as I know), with a drag coefficient of 1.05 (cubic section, that's the closer I found), I compute a drag force of 0.044 N.
If the material is composed of Mylar (volumic mass = 1.38 g/cm^3), a layer of 6 µm has a weight of 0.00057 N.
So this drag force could lift a material composed of about 76 layers of Mylar.
Hence, it seems plausible that wind alone moved that thermal material.

Merci beaucoup, Thomas, for your calculations.
The difference between our independently determined distances to the object is about one percent, which is a very good agreement and dispels my doubts about my results.
The size of 21 cm I calculated is the largest diagonal of the piece, respectively the smallest diameter of a circle that contains the piece completely.

Did we get a context image of this target yet, just wondering of it's in the RA Workspace to try and get an idea of scale

See the Red Book of Sheldahl, p. 15 and further on

Curious, it looks like there may be another fragment?

Attachment: a small smooth rolled pebble in 8× magnification.

Context: sol 467, ZL0_0467_0708387668_428EBY_N0260756ZCAM08487_1100LMJ01

442px from left, 43 px from the top of this original raw photo (including black margins)

At this point it's a good reason to think about the non-zero probability of the event when next time the wind shall lift this piece of aluminium-covered material again and throw it on the rover. Especially onto the naked wires of the MEDA sensor.

Regarding the sol 466 SuperCam Remote Micro-Imager mosaic in this post:

Meanwhile we did, but it was the proverbial search for the needl in a haystack.
A Mastcam-Z stereo-pair of the vein was taken on sol 461 from an earlier waypoint.
The calculated distance to the stone with the vein was about 19 m on sol 461.
That gives a width of the entire Supercam RMI mosaic of about 70 mm, and a thickness of the vein of about 4 to 7 mm.
The Supercam images of the vein were taken on sol 466 from a shorter distance (roughly estimated about 3 m).

Here are the context images:
1. Sol 461 Mastcam-Z, site 26 drive 470
2. Sol 464 Navcam, site 26 drive 694, blue dot above the image center
3. Sol 464 Navcam, site 26 drive 756
4. Sol 464 Navcam, site 26 drive 756 (3. and 4. same site and drive as the Supercam image)

1 Click to view attachment . . 2 Click to view attachment . . 3 Click to view attachment . . 4 Click to view attachment

Links to original raw images: link1, link2, link3, link4

Regarding the perforation of the thermal blanket piece:
Thank you, Cherurbino, for your information.
I couldn't find a pattern in the book that matches well with the one on Mars.
Maybe, the imaged material does not have a standard perforation pattern, or it is from another provider,
or perspective shortening does not allow an exact calculation of the pattern on Mars.