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von Kármán - Chang'e-4 touchdown + updates

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#1 Jayem

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Posted 03 January 2019 - 07:11 AM

China's space agency has successfully landed their Chang'e-4 spacecraft on the Farside of the Moon.

 

Left image: is of surface looking southwards (credit of CNSA), right image: general landing location for now.

 

John Moore

Touchdown1

click for larger view


Edited by Jayem, 03 January 2019 - 07:13 AM.

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#2 Jayem

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Posted 03 January 2019 - 12:33 PM

Rover on the surface now...no time wasting here (Image: credit CNSA).

 

Exact location of the lander itself is still being addressed, but guessing that that will be announced soon (LROC site shows the general area before landing, but more refinements of the exact location have since been made). LRO may image the site round end of Jan 2019, but for now it's location, location.

 

This mission rivals both the Russian, the American and other independent efforts seeking to establish a footprint (literally) on the Moon.

 

Btw...the  Chang'e-3 lander (five years ago since launched) was still working before the Chang'e-4 launch, but was powered down so as to not interfere with it.

 

Shutdown of data - due to high temperatures - on the lander and rover may occur over the next few days, so stay tuned.

 

John Moore

RoverDeployed3

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Edited by Jayem, 04 January 2019 - 12:12 PM.

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#3 Jayem

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Posted 04 January 2019 - 07:58 AM

Next update...a few days time.

John Moore


Edited by Jayem, 04 January 2019 - 02:40 PM.


#4 astrochef

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Posted 05 January 2019 - 02:21 PM

So cool to see.  I hope they release images often.

Ty



#5 Magnetic Field

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Posted 06 January 2019 - 08:37 AM

 

China's space agency has successfully landed their Chang'e-4 spacecraft on the Farside of the Moon.

 

Left image: is of surface looking southwards (credit of CNSA), right image: general landing location for now.

 

John Moore

 

click for larger view

 

Adding to this.

 

There is a site called ,,Space News" (https://spacenews.com/segment/news/) with updates and articles relevant to everything space related (mostly US though), e.g.:

 

https://spacenews.co...de-of-the-moon/



#6 Magnetic Field

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Posted 06 January 2019 - 08:45 AM

 


 

This mission rivals both the Russian, the American and other independent efforts seeking to establish a footprint (literally) on the Moon.

 

This is the first ever sign that China has taken a lead in anything. 

 

China is behind 20 or 30 years in terms of developing their own technology and moving away from being seen as the world assembly line without ever being asked for their input (railways, aircrafts, machinery, fundamental basic science etc),  the Chinese government also officially admits it (google is your friend for anyone who does not believe me).

 

One must really congratulate  the Chinese scientists. Quite a feat.



#7 Jayem

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Posted 06 January 2019 - 11:09 AM

Btw, after the rover moved towards the crater, it did a ~ 180 degree turn on its axis, and most likely will already have taken a pic of the lander, so, hopefully that will be available soon. It will then probably head back doing a recce around the lander (possibly going off to the left) - taking more pics. What direction they will then head after the recce towards is anyone's guess...will they head north? 

 

Have tried to locate where the lander is on the surface using high-rez NAC views, and while one or two spots looked like the background crater and relief, I suspect I'm looking in completely the wrong location, as looking at the before landing vid released, did it look like it was drifting off to the left. If so, then its landed location may be more towards the west a little (as looking down normally on von Kármán with north at top, west on left). One thing's for sure, however, is that the CNSA scientists know exactly where they are, so panoramas please.

 

John Moore


Edited by Jayem, 06 January 2019 - 11:33 AM.


#8 Jayem

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Posted 11 January 2019 - 02:30 AM

To suit slow uploads - a small preview image here -> 6780073

 

A high-rez Panoramic view and a (Round-Me) view.

 

Note, how the rover - previously turned northwards (towards us), but now has turned westwards (south is top)...so is it just taking images, or intending to go in that direction (and that's what is exciting about this mission - the CNSA are exploring the surface from both a lander and rover perspective, and then determining what path, what feature is worth looking at).

azimuth cylindrical panoramas ChangE4 Jan11 2010

click for larger view (credit: CNSA)

 

Descent stage video (YouTube link)

 

Location Jan2019

click for larger view

John Moore


Edited by Jayem, 11 January 2019 - 11:41 AM.

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#9 Jayem

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Posted 12 January 2019 - 05:33 PM

Video of rover moving towards the small crater, and then turning.

 

Apparently, the Rover later went off to the west a little bit (South is up, West to the left in the video), then headed northwards. The Rover, therefore, may well be at the northern sector of the Lander by now, to then take a picture of it (their flag insignia is on the northern end of the Lander, so they might want to, I'll presume, do like they did the same with Chang'e-3).

 

Below, what looks like a shot of the large screen in CNSA HQ (Credit: CGTN)…showing what looks like the current location of the Rover, as taken on 11 Jan 2019 at 16.33 UT. Here, North would be to the top-left of image, South at bottom right.

YuTupath 11Jan2019

 

They have approximately one more earth day to carry out further checks, as both Lander and Rover head into darkness (for some 14 to15 of 24-hour-long earth nights) where temperatures can plunge down to - 175 degrees Celsius. With no sunlight, the solar panels won't be able to continue to power essential equipment, so other power means will be used for keeping some parts warm to survive until the 28 Jan 2019.

 

Below: approximate sleep-mode period (click for larger view)

LunarNightSleepMode
 
John Moore

Edited by Jayem, 13 January 2019 - 04:59 PM.

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#10 Jayem

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Posted 14 January 2019 - 02:39 PM

Below image: an attempt at trying to identify the features through a 'little planet' view on the horizon from the CNSA panoramas provided (note, all annotations - dots, degrees etc., are one's estimates, so please don't take them as official - they could be wrong).  

 

Btw, using panoramas is quite easy to turn them in to 'little planets' if, say, you have PS or other 'wares (here's a PS example on to how to do so that may also apply to other 'wares non-PS).

 

I don't have the expensiveness of PS, but my cheap-ish 'ware, has hopefully done the same.

Click for larger image

LittlePlanetView
 
John Moore

Edited by Jayem, 15 January 2019 - 10:55 AM.


#11 Jayem

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Posted 16 January 2019 - 07:51 AM

Seeds and flies on the Moon.

 

Enclosed within a self-contained biosphere onboard the Chang'e-4 Lander, the left image below shows a cotton seed that has sprouted, while at right a graphic shows the setup for the entire biological experiment. It's really an ideal ecosystem, where the plants produce oxygen and food, yeast regulates carbon dioxide and oxygen, while the fruit flies can consume everything through the photosynthesis process. 

 

As power and heat is now at its lowest as the lunar night has begun, the ecosystem will eventually decompose down to organic fundamentals. A similar, self-contained ecosystem on the Earth started at exactly the same time as the moon experiment was activated, where a rapeseed sprouted. Some concern about the possibility of contaminating the Moon, but if that were to occur, the -175 degrees Celsius would likely kill off any survivors. The experiment was really just a first test for the future ones on future missions.

 

Click for larger view (Image credit: Chongqing University)   

Seeds
 
John Moore

Edited by Jayem, 16 January 2019 - 07:52 AM.



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