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Chang'e-4 farside landing mission
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post Feb 20 2019, 08:47 AM
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I know CH4 and Yutu2 are resting now but I meant SOL-2 which already passed and there is no single photo from this day. (btw. we had plenty of photos, movie clips etc from first SOL so I wonder what's the cause of current situation.).


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Thorsten Denk
post Feb 20 2019, 07:31 PM
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I've seen one new picture that seems to be from the second month. Maybe.

It's from this tweet linking to this site.

Thorsten

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Phil Stooke
post Feb 27 2019, 09:33 PM
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This chinese forum page:

http://www.9ifly.cn/thread-5819-98-1.html

includes a route map for the first 2 lunar days. I assume it is based on real data and will update my map shortly. Any further information would be much appreciated.

Phil


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Phil Stooke
post Mar 4 2019, 06:14 PM
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https://www.weibo.com/5386897742/HjniODYsW?...nd1551722722531

New images in a post on Weibo. Open in Chrome to get a translation. One is from a 'hazard camera' (to use MER/MSL terminology) or ICC (Insight) type of camera, mounted low and very wide angle. It looks northwest with the central peak on the horizon. The rover is only about 7 m further from the last night resting place. The second image is a closeup of the rock in front of the rover taken by the camera in the infrared spectrometer instrument. It shows the IR target on the rock.


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John Moore
post Mar 4 2019, 07:33 PM
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So, if during the first lunar day the Rover travelled some 44.185 metres, travelled some 75.815 metres during the second day, the third lunar day involved some travelling by the Rover of ~ 7 metres in all to the rock.

John
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Phil Stooke
post Mar 4 2019, 08:02 PM
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Only the first half of the 3rd day, March 1 to 3, followed by the noon siesta we are in right now. They probably took quite a bit of that time to adjust the position of the rover to get the fixed field of view of the instrument pointing at the rock. And actually we don't know this is the only rock they have analyzed in these last few days.

The original Yutu only used the instrument on soils so pointing was not such an issue. It was heading for some light-toned rocks on the rim of the crater just north of the lander when the rover stopped moving, so the science team may have been planning a rock analysis that never happened.

Phil


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Paolo
post Mar 4 2019, 08:29 PM
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QUOTE (Phil Stooke @ Mar 4 2019, 07:14 PM) *
New images in a post on Weibo.


It does not work for me. I land on the weibo login page
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Hungry4info
post Mar 4 2019, 08:51 PM
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I occasionally have the same trouble. Here are the two referenced images (not modified, the image quality really is that low, clearly the post on Weibo was not the true original images).
Attached thumbnail(s)
Attached Image
Attached Image
 


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Phil Stooke
post Mar 10 2019, 08:44 PM
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I don't know what happened with the above link, but it works fine for me.

Andrew Jones tweeted this:


https://twitter.com/AJ_FI/status/1104269021829128192


- giving some new images and a link to the source. The new images include a half-panorama taken at the end of lunar day 2, showing a group of small rocks which became the target of activities on the 3rd lunar day. If you go through the source you can piece it together: early in day 3 Yutu 2 moved on a dogleg path towards the rocks to put the VNIS (Visible and Near-Infrared Spectrometer) field of view on a small rock. The first attempt had the field of view just off the rock (Andrew did not reproduce that image, you have to go to the source to see it). The rover turned slightly and moved forwards and now the FOV was correctly placed. That takes us back to the images posted above.

Today, March 10th, Yutu 2 is waking up after a noontime nap.

Here is the panorama - patched with bits from the other images to cover sun glints etc. - and reprojected to show the area. My orientation might be slightly off but should not be too bad.

Phil

Attached Image




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Phil Stooke
post Mar 11 2019, 04:57 PM
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This is the image showing the VNIS image that missed the target.

Phil

Attached Image


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John Moore
post Mar 11 2019, 08:36 PM
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Third lunar night begins approximately on March 14, 2.30 UT, leading later to the fourth lunar day beginning approximately on 28 March 22.30 UT.

Note, above dates are related to terminator times over the landing site, not sleep-times/awakening-times of the Lander/Rover, which usually involves a day or two before or after the terminator dates occur.
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kenny
post Mar 16 2019, 11:06 AM
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Nice summary of current status of Chang'e-4 here, as Yutu-2 attains its design lifetime...

SpaceNews Chang'e-4
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Phil Stooke
post Mar 25 2019, 06:07 PM
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https://twitter.com/AJ_FI/status/1110035767697567746

Andrew Jones tweets a Chinese map and a nice picture of tracks. That was one of several track images shown in a presentation by Xiao Long at LPSC. I spoke to Long before his talk and he asked where I got the map information, as he didn't have access to it. I showed him the informal sites I had information from. In his talk he showed a redrawn version of my map! This new map solves that problem for Long, a proper Chinese map. I hope we will see this on a regular basis. Next I hope to see a few names for craters along the path.

Phil


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Phil Stooke
post Mar 25 2019, 10:24 PM
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Here's another Chinese forum page:

https://club.6parkbbs.com/life2/index.php?a...mp;tid=15228936

This is notable for a very early traverse plan. A hexagon around the lander, about 10 m on each side. They could follow either the clockwise or counterclockwise paths around the lander, photographing it from the vertices of the hexagon before departing. The counterclockwise path is blocked by large craters so the clockwise path was adopted, but modified so there was no imaging from D, north of the lander. This is exactly like the original CE3 - Yutu plan, but flipped north-south. This time I am adding the map here:

Attached Image


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Hungry4info
post Mar 29 2019, 07:30 PM
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A paper in Nature that I can't access has some images.
https://www.nature.com/articles/s41561-019-0341-7

This tweet has the images attached, but there's not a lot of context.


Attached thumbnail(s)
Attached Image
Attached Image

Attached Image
Attached Image

Attached Image
Attached Image

 


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