InSight Surface Operations, 26 Nov 2018- 21 Dec 2022 |
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InSight Surface Operations, 26 Nov 2018- 21 Dec 2022 |
 Dec 1 2018, 02:53 AM
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#106
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Junior Member  Group: Members Posts: 83 Joined: 19-April 05 Member No.: 251  |
QUOTE (nprev @ Nov 30 2018, 08:37 PM)  Is the ICC cover still on, then? No, its off. Think they need to send up a tech with a lens cloth to clean that lens. |
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Dec 1 2018, 03:20 AM
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#107
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Senior Member Group: Members Posts: 2547 Joined: 13-September 05 Member No.: 497 |
QUOTE (nprev @ Nov 30 2018, 06:37 PM) Is the ICC cover still on, then? As noted, it's off. The cover didn't work very well, apparently. Turns out that very wide-field fisheyes like this one can be more susceptible than narrower-field optics to dust contamination, somewhat paradoxically. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Dec 1 2018, 03:22 AM
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#108
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 Member Group: Members Posts: 691 Joined: 21-December 07 From: Clatskanie, Oregon Member No.: 3988 |
I think the wind is already starting to clean the lens. Dust after the cover came off is easily seen removed over the coarse of 33 minutes! Looks like we landed in a very windy location.
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Dec 1 2018, 03:24 AM
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#109
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Solar System Cartographer Group: Members Posts: 10251 Joined: 5-April 05 From: Canada Member No.: 227 |
No, the circular outline is gone - dust must have sneaked in under the cover, though not too much and we can hope it will blow off.
EDIT - didn't see there was an extra page of posts! Oops. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf 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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Dec 1 2018, 03:27 AM
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#110
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 Senior Member Group: Members Posts: 2432 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
Nice work James
Also from sol 4 Arm / Scoop movement prior to full deployment
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Dec 1 2018, 03:55 AM
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#111
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Junior Member Group: Members Posts: 48 Joined: 8-August 12 Member No.: 6507 |
QUOTE (Phil Stooke @ Nov 30 2018, 08:24 PM) No, the circular outline is gone - dust must have sneaked in under the cover, though not too much and we can hope it will blow off. It looks like my descent thrusters blew dust under the cover. Sorry. Hopefully wind will clear the lens. Twelve sets of 300 N (68 lbf) thrusters pulsing at 10 Hz creates a lot of dynamics. Also it looks like the one footpad visible in the photo sank 75 mm (3") or so into the surface. Certainly different than Phoenix (which makes sense since PHX landed on frozen soil). |
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Dec 1 2018, 04:02 AM
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#112
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Member Group: Members Posts: 691 Joined: 21-December 07 From: Clatskanie, Oregon Member No.: 3988 |
Propguy,
I think we will deal. If it weren't for the descent thrusters, the camera would have a heck of alot more dust on it...embedded in the subsurface. 
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Dec 1 2018, 04:13 AM
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#113
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Member Group: Members Posts: 306 Joined: 4-October 14 Member No.: 7273 |
Tried some debanding on one of the new MarCO-B images, taken during the approach phase. Distance was about 18,000 km. If Phobos was within the FOV, it was lost in the compression/noise.
Another from the departure phase, taken from a distance of 17,500 km.
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Dec 1 2018, 07:42 AM
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#114
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 Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
QUOTE (propguy @ Nov 30 2018, 09:55 PM) It looks like my descent thrusters blew dust under the cover. Sorry. Hopefully wind will clear the lens. Twelve sets of 300 N (68 lbf) thrusters pulsing at 10 Hz creates a lot of dynamics. Also it looks like the one footpad visible in the photo sank 75 mm (3") or so into the surface. Certainly different than Phoenix (which makes sense since PHX landed on frozen soil). Strange, looking at the animation I don't really see much correlation between dust after the cover opens and visible dust while it was closed. Maybe flipping the cover open caused dust to fly off it and static electricity made some land back on the lens? Esp. when looking at the sky, I don't see much correlation at all between before and after opening. Obvious dust particles that fell off by the third image aren't present in the first one, as far as I can tell. -------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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Dec 1 2018, 10:06 AM
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#115
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 Member Group: Admin Posts: 978 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
QUOTE (propguy @ Nov 30 2018, 07:55 PM) It looks like my descent thrusters blew dust under the cover. Sorry. Hopefully wind will clear the lens. Twelve sets of 300 N (68 lbf) thrusters pulsing at 10 Hz creates a lot of dynamics. Also it looks like the one footpad visible in the photo sank 75 mm (3") or so into the surface. Certainly different than Phoenix (which makes sense since PHX landed on frozen soil). Well, it beats the alternative, dosn't it? It must have been quite loud upon landing. Given the compression of the soil and using the acceleration on impact it should be possible to assess the compactness of the soil. That would be interesting to see if the landing location still fits the expectations. I'm sure this will be used when evaluating where to drill. Paolo -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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Dec 1 2018, 10:51 AM
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#116
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 Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Real curious now to see just how much dust might've been blown away from the lander. There might be some shallow depressions around the thruster areas as well.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 1 2018, 02:13 PM
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#117
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 Member Group: Members Posts: 291 Joined: 29-December 05 From: Ottawa, ON Member No.: 624 |
Latest raw images showing the arm getting it's first workout.
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Dec 1 2018, 02:48 PM
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#118
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 Senior Member Group: Members Posts: 2113 Joined: 13-February 10 From: Ontario Member No.: 5221 |
QUOTE (RoverDriver @ Dec 1 2018, 05:06 AM) Well, it beats the alternative, dosn't it? It must have been quite loud upon landing. Given the compression of the soil and using the acceleration on impact it should be possible to assess the compactness of the soil. That would be interesting to see if the landing location still fits the expectations. I'm sure this will be used when evaluating where to drill. Paolo Would the 'hand' on the arm be at all useful for measuring the soil properties? After the instruments are safely placed, can it reach down far enough to directly touch the surface, perhaps make a small indention/trench? |
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Dec 1 2018, 03:09 PM
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#119
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 Senior Member Group: Members Posts: 4259 Joined: 17-January 05 Member No.: 152 |
QUOTE (hendric @ Dec 1 2018, 08:42 AM) Strange, looking at the animation I don't really see much correlation between dust after the cover opens and visible dust while it was closed. Maybe flipping the cover open caused dust to fly off it and static electricity made some land back on the lens? Good point. Or maybe there was so much dust caked around the cover that we had a large cloud when it opened and some settled back on the lens. Or, maybe dust wasn't deposited after the opening, but was on the lens before opening (ie sneaked under the cover during landing) and just moved due to wind after opening. Given the low correlation that seems less likely. |
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Dec 1 2018, 03:11 PM
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#120
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Member Group: Members Posts: 153 Joined: 4-May 11 From: Pardubice, CZ Member No.: 5979 |
QUOTE (Explorer1 @ Dec 1 2018, 04:48 PM) After the instruments are safely placed, can it reach down far enough to directly touch the surface, perhaps make a small indention/trench? Of course. "... InSight's robotic arm also has a bucket with a capacity of roughly 500 g of soil. However, this bucket is not intended for massive excavation works; its main role is to prepare the ground as well as possible before setting the instruments down. It allows engineers to shift a stone that is in the way, flatten a little mound in an otherwise optimal deployment sector, or simply check the nature of the ground." https://www.seis-insight.eu/en/public-2/the...ida-robotic-arm |
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