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Old December 6th, 2018 #1
Ray Allan
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Default Chang'e-4 Lunar Probe

On December 7, 2018, China is set to launch Chang'e-4, the first probe to land on the Moon's far side, where it will deploy a rover to investigate conditions there. Incidentally, the launch comes on the 46th anniversary of the launch of Apollo 17, the last time humans ventured to the Moon.

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Old December 7th, 2018 #2
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https://www.xinhuanet.com/english/20..._137658276.htm
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Old January 3rd, 2019 #3
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China Lands Chang'e-4 mission on the far side of the Moon

https://www.nasaspaceflight.com/2019...nge-4-mission/

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Old January 3rd, 2019 #4
Nikola Bijeliti
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Was it carrying a plaque that reads, "We came in peace for all mankind"?
 
Old January 4th, 2019 #5
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Successful offloading of Chang'e-4 rover Yutu-2 (Jade Rabbit).

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Old January 11th, 2019 #6
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New CE-4 panoramic shot of von Karman Crater landing site on Moon's far side received 1/10/2019.

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Old January 11th, 2019 #7
T.Garrett
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Question mmmm

That video kinda reminds me of some pics from the "fake" NASA moon landings in the 1960's ...I don't hear anyone howling that the chinks are "faking" the 'landing' of their probe on the far side, where of course there's no way any of it can be independently detected from earth.

Its all being shot in a teevee studio in Shanghai, I tell ya ...those fuckin slopes!


PS I'm being facetious in this in case you're wondering.

Last edited by T.Garrett; January 11th, 2019 at 05:31 AM.
 
Old January 11th, 2019 #8
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CE-4 landing video. Video is sped up 2.5 times from actual descent rate.

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Old January 12th, 2019 #9
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Photo of lander from Yutu-2 rover.

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Old February 24th, 2022 #10
Dawn Cannon
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Default Lunar Rover Discovers Mysterious Glass Spheres on The Far Side of The Moon

23 FEBRUARY 2022
China's Yutu-2 mission has made another fascinating discovery on the far side of the Moon. Glistening amid the dry, gray dust, the rover's panoramic camera picked out two small intact spheres of translucent glass.


https://www.sciencealert.com/the-moo...lass-balls/amp

I think they are too big to be the 'nova' tektites.
 
Old February 25th, 2022 #11
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Default Future Chinese lunar missions

China plans to launch additional lunar probes this decade, starting with Chang'e-7 in 2024 timeframe to land near the Moon's south pole to search for water ice in preparation for a manned lunar base there in the 2030s.

https://www.space.com/china-upcoming...ssions-details
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Old February 25th, 2022 #12
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Quote:
Originally Posted by Ray Allan View Post
China plans to launch additional lunar probes this decade, starting with Chang'e-7 in 2024 timeframe to land near the Moon's south pole to search for water ice in preparation for a manned lunar base there in the 2030s.

https://www.space.com/china-upcoming...ssions-details
Well if they haven't discovered nova tektites on the dark side it might be a good place to hide from the blast
 
Old June 15th, 2022 #13
T.Garrett
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Talking Chang'e-4 ...electronics made in China

The lander, equipped with an expensive radio spectrometer ...was supposed to be able to scan the sky sheltered from earth's rf pollution deployed on the dark side of the moon. It has been practically unusable since the 'historic' landing due to noisy onboard power systems designed and built in China.

This is fucking ridiculous. I as an amateur radio operator build power supplies and AC/DC distribution systems that don't interfere with my receivers at .01 - 40 Mhz where much radio astronomy is done. If I weren't able to manage this I'd quit operating on HF where I spend most of my fun time on radio. Imagine trying to copy a once in a lifetime signal from, say a station in Antarctica through a shitstorm of noise created by your own fucked up equipment?

Thankfully, this Chang'e-4 was constructed in cooperation with the Dutch and the rest of its systems seem to be performing flawlessly. Itz obvious to me that the chinks by themselves are not ready for "prime time" in these types of endeavors. I've never heard of issues like this with US or Russian spacecraft.

And think on this. Our countries are flooded with cheap chinese consumer electronics where even less attention was paid to design than in the sorry ass Chang'e-4

Quote:
China put a telescope on the far side of the moon. It still cannot escape from radio noise

An instrument on board the Chang’e 4 lander was intended to scan the universe free from radio interference from Earth but the reality is proving trickier.

Scientists knew radio noise from the lander would be a problem, but now need another solution after their initial precautions did not prove effective.

Chinese scientists are working on a plan to save the only radio telescope operating on the far side of the moon from major noise problems that are stopping its attempts to explore the universe.

Making observations from the far side of the moon has long been a goal for astronomers because the radio environment there is so much cleaner than the Earth’s.

Some even hope that a radio telescope operating there could pick up ultra-low frequency radio signals from deep space containing secrets of how the first stars and black holes formed in the universe.

The Chang’e 4 lander’s location on the far side means that the moon acts as a natural shield against radio interference from the Earth, but the problem lies in radio emissions from the lander itself, which have been higher than anticipated since it started operating three years ago.

Scientists knew these radio emissions would be a problem for the low-frequency radio spectrometer it carried, but the preventive measures they took have not worked as well as they hoped.

The device was designed to observe low-frequency radio emissions – of between 0.1 and 40 megahertz – especially intense radio bursts from the sun that may affect satellite communications here on Earth.

“The intensity of noises from the lander is about two to three orders of magnitude higher than that of the solar signals we wanted to detect,” according to a paper published in the peer-reviewed Chinese journal Astronomical Research & Technology.

The lander’s noises – which are caused by various factors, including electromagnetic leakage from power sources – drowned out even the strongest radio pulses from the sun, said a Beijing-based astronomer who is familiar with the project.

The astronomer said part of the problem was that Chang’e 4 had “inherited” the design of its predecessor, which had not been designed for low-frequency observations.

The spectrometer had been equipped with three 5-metre antennae to pick up signals from the sun and the lander, as well as a 20cm one designed solely to detect interference from the lander.

But these noise reduction measures have not been enough, prompting scientists to look for other ways to counter the problem.

In the paper, scientists from the National Astronomical Observatories of China and Tsinghua University wrote that there may be a complex mathematical solution to the problem.

The identified an algorithm called CLEAN – developed by the Swedish astronomer Jan Hgbom in the 1970s and widely used in radio astronomy – as a possible tool that could help drown out louder noises.

If their solution works, they estimate that it could improve the instrument’s sensitivity by up to eight orders of magnitude.

However, it may not be an easy problem to solve. The other low-frequency instrument carried by Chang’e-4 has also suffered from technical problems.

The instrument, jointly developed by Dutch and Chinese scientists, on board Queqiao, Chang’e-4’s relay satellite, is designed to detect radio waves with frequencies under 30 megahertz to investigate the early universe.

Although noises from the satellite platform are less of a problem for this instrument, a member of the Chang’e 4 team said it has still created problems with data transmission and in-orbit debugging.

Despite these problems, the lure of the far side of the moon remains strong for scientists around the world.

Nasa scientists are looking a proposal to build a 1km diameter radio telescope in a crater there, and the US is also carrying out a feasibility study on two plans to build a network of telescopes using material extracted from the lunar surface.
https://www.scmp.com/news/china/scie...mpaign=3179501


BTW, I am available for consultation on power supplies ...

Last edited by T.Garrett; June 15th, 2022 at 07:15 AM. Reason: consult offer :)
 
Old June 15th, 2022 #14
Ray Allan
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I didn't know the Bunny Girl probe had that crappy of electronics. The novelty is it's the first spacecraft to land on the lunar far side. The chink Mars rover seems to be doing okay, though.

I'm just disappointed Hitler's Iron Sky base hasn't been found.
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