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Chang'e-4 farside landing mission
Phil Stooke
post Sep 14 2019, 06:40 PM
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post 2287 on this forum page:

http://www.9ifly.cn/thread-5819-115-1.html

gives a summary of the mission including confirming what I had thought, that in May autonomous hazard detection and avoidance was tested on Yutu 2. It includes two images of a route map which I will se to update our map, when I can get to it (I'm on the road at the moment).

Phil


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Phil Stooke
post Sep 16 2019, 06:43 PM
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Andrew Jones directed me to this drive diary for the 9th day:

https://mp.weixin.qq.com/s/NAm3JQHLJymMOofpGX4pHQ

It includes a mosaic which can be roughly reprojected to give this:

Attached Image


The day 9 tracks are at left. The diary describes efforts to analyze the odd material in the crater (open in Chrome for a rough translation).

Here I show an interpretation of the pattern of tracks. Not sure I have it right. The mosaic is from the end of day 9.

Attached Image


Map update will follow when I can get to it (I'm on vacation in Brittany)

Phil


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John Moore
post Sep 16 2019, 08:20 PM
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I'll assume that the first image below is a track-image of where Yutu-2 pulled back (because of the first VNIS wasn't suitable), and then progressed forwards to conduct a second view as highlighted below in the second image (colouration is simply for clarification of the area concerned).

John





Also, I'm assuming, the highlighted sector (on left of the third image below) is relative to the sharp angles pronounced in Phil's image.


John
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Phil Stooke
post Oct 8 2019, 05:55 PM
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https://www.weibo.com/ttarticle/p/show?id=2...425030623690756

This link is to a rover diary for lunar day 10. Using Chrome to translate, it seems that some technical issues had to be overcome (sun sensor and knowledge of attitude) so not much movement this month - Andrew Jones tweeted that the drive was only about 5 m. Yutu 2 is still near the small crater with a bit of glass in it (and there's a photo of the sparkly glass in the article) and either made a new analysis with better lighting or is going to do that before they leave.

Phil


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Phil Stooke
post Oct 15 2019, 12:11 AM
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https://twitter.com/AJ_FI/status/1183671036958642176

Here Andrew Jones tweets some more images from Yutu 2 including nice views of the central peak and the tracks behind the rover. I have projected those images (very roughly) to help with mapping.

Phil

Attached Image


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Phil Stooke
post Oct 15 2019, 10:35 PM
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That was a very crude reprojection of the tracks image for initial planning work. Here is a better version.

Phil

Attached Image


Attached Image


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atomoid
post Oct 25 2019, 08:41 PM
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latest on the starch wreck gummies.. new article on space.com has some processed images
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John Moore
post Nov 14 2019, 09:12 PM
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Latest by LRO - finding the probable impact site of Longjiang-2.

John Moore
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Phil Stooke
post Nov 14 2019, 09:46 PM
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A very nice bit of work there by Cees Bassa, Daniel Estevez and others. This comparison of the before and after images shows the difference between the two frames, with increased contrast. The images were just taken from the release, obviously.

At first I thought the ejecta was deflected off the approach vector by the steep slope, but the difference image makes me feel it is more symmetrical.

Phil


Attached Image


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John Moore
post Nov 14 2019, 10:32 PM
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It truly is extraordinary from the LRO perspective -- given the very minute change in the terrain texture surface (barely noticeable by none of us, really).

John More
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