Atop/Around the Greenheugh Pediment, Site 79-, sol 2695-3199, 3 Mar 2020-6 Aug 2021 |
Atop/Around the Greenheugh Pediment, Site 79-, sol 2695-3199, 3 Mar 2020-6 Aug 2021 |
May 12 2020, 12:37 AM
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#106
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
I can see why they termed it nodular.
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May 13 2020, 05:47 AM
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#107
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Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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May 25 2020, 09:07 AM
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#108
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Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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May 27 2020, 09:49 AM
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#109
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Senior Member Group: Members Posts: 1619 Joined: 12-February 06 From: Bergerac - FR Member No.: 678 |
Hey, could you help me ?
On Sol 2767, Curiosity took a very odd image. I've just unbayer it, so we can see that it was taken under blue filter. Given the time at this location, it was during the night. An other pic, cropped and a bit cleaned up. Problem is, I don't have any clue of what is that object. Could be Phobos, but after a simulation in Stellarium, this moon was just setting. And Deimos is too small to be picture with such resolution. But maybe Stellarium wasn't very accurate about the exact location of Phobos in the sky. So, I don't know… -------------------- |
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May 27 2020, 02:01 PM
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#110
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Martian Photographer Group: Members Posts: 352 Joined: 3-March 05 Member No.: 183 |
That looks like a mid-morning image [*] through the solar filter taken as part of a dark current measurement. I'd expect the image aim to be at nearby ground. It would be a very long exposure--typically they are a set of 0-sec, short, and long exposures. The solar filter transmits ~0.001% of incident light, but the one in M-100 has a couple scratches or pinhole defects that let light into the system. And yes, the artifacts are blue because the M-100 solar filter is paired with a 440-nm, narrow-band filter.
The artifacts have been around since the start of the mission. Sun images are designed to miss them--at least they are conveniently off-center. See also: Bell et al 2017 (https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016EA000219) section 4.2.7 (pinhole) and 4.2.1 (dark measurements). * I see just after midnight UTC, which is a bit before 9 AM that sol. |
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May 27 2020, 06:03 PM
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#111
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Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
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May 28 2020, 10:51 AM
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#112
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Senior Member Group: Members Posts: 1619 Joined: 12-February 06 From: Bergerac - FR Member No.: 678 |
Thank you both for your answers
It explains… A LOT actually. I suspected something like this but I was like "Come on ! A hole in a solar filter ? Makes no sense !". I was wrong… As for my Stellarium simulation, I don't understand where I made a mistake. I input the correct location, the correct time, and this gave me nighttime. Not daytime. I should dig deeper to find where I made a mistake… But again, thank you -------------------- |
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May 28 2020, 09:22 PM
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#113
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
A bit quiet lately as Curiosity digests its Glasgow lunch. This shows where and when a few events happened:
I should point out that my 'sample dumps' include the sprinkling of small amounts of material as well as the bigger dump on the last sol. Now it's time to get moving again. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 30 2020, 10:07 PM
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#114
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Member Group: Members Posts: 809 Joined: 3-June 04 From: Brittany, France Member No.: 79 |
Back to the RMI observations of Gediz Vallis Ridge: I eventually finished stitching together several RMI sets and colorized them with MC Right pictures. More mosaics to come!
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Jun 1 2020, 10:17 PM
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#115
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Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Jun 3 2020, 02:47 AM
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#116
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
This is Paul's partial panorama reprojected - this is what gave me the position on the map which should be pretty good. Today, sol 2781, we drove again.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jun 3 2020, 04:26 AM
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#117
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Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Jun 3 2020, 07:05 AM
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#118
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jun 3 2020, 01:03 PM
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#119
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Senior Member Group: Members Posts: 2819 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Jun 3 2020, 07:17 PM
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#120
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Senior Member Group: Members Posts: 2819 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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