China Completes Largest Radio Telescope In The World - Polidicks

[t]http://media.npr.org/assets/img/2016/09/25/gettyimages-610291380-93fff5014e3b3211cc11cd5d67fe64f10cef79d2-s800-c85.jpg[/t] [QUOTE=NPR]The largest radio telescope in the world officially opened on Sunday, according to China's official Xinhua News. The Five-hundred-meter Aperture Spherical Telescope, or FAST, is named after its diameter, which at 500 meters makes it 195 meters wider than the second largest telescope of its kind, the Arecibo Observatory in Puerto Rico. Xinhua reports the telescope cost $180 million, and displaced 8,000 people from their homes to create the necessary 3-mile radius of radio silence around the facility. It will be used for "observation of pulsars as well as exploration of interstellar molecules and interstellar communication signals."[/QUOTE] [video=youtube;O-CfsYF-cEE]https://www.youtube.com/watch?v=O-CfsYF-cEE[/video]

This is cool as shit but its also really shitty that they kicked 8k people out to build it.

$180 million. That seems oddly cheap.

Wikipedia has a good comparison image of the size of this dish versus the Arecibo dish (which was famously seen in the James Bond movie Goldeneye): [IMG]http://i.imgur.com/fkNOT94.png[/IMG]

better snip that image lest FP gets DMCA'd for :wok: again

Not a radio telescope, just a big wok to feed all the countries citizens

[QUOTE=sltungle;51106974]Wikipedia has a good comparison image of the size of this dish versus the Arecibo dish (which was famously seen in the James Bond movie Goldeneye): [IMG]http://i.imgur.com/fkNOT94.png[/IMG][/QUOTE] But oddly enough, the Arecibo dish actually beats the FAST dish by an extra 3,000 m² of collecting area. [QUOTE=Wiki]Although the reflector diameter is 500 metres (1,600 ft), only a circle of 300 m diameter is used (held in the correct parabolic shape and "illuminated" by the receiver) at any one time.[/QUOTE]

[QUOTE=Snickerdoodle;51107125]But oddly enough, the Arecibo dish actually beats the FAST dish by an extra 3,000 m² of collecting area.[/QUOTE] What? Whyd they do that? Last I had heard (at a colloquim about this vague topic) the new big thing is networked smaller antenna systems, not fuck huge arrays.

[QUOTE=Snickerdoodle;51107125]But oddly enough, the Arecibo dish actually beats the FAST dish by an extra 3,000 m² of collecting area.[/QUOTE] FYI they have to do the same with arecibo. It's intrinsic to the geometry of the dish that you can't use the entire surface.

So can we see aliens with this piece of shit or what? Or are they scoping out spots for bases in space?

[QUOTE=pentium;51106793]$180 million. That seems oddly cheap.[/QUOTE] you, know the workers whernt pay very well right?

[QUOTE=Badballer;51107051]Not a radio telescope, just a big wok to feed all the countries citizens[/QUOTE] careful garry will get sued again

[QUOTE=paindoc;51107201]What? Whyd they do that? Last I had heard (at a colloquim about this vague topic) the new big thing is networked smaller antenna systems, not fuck huge arrays.[/QUOTE] It's how they point the telescope at different parts of the sky, the focal point roves around the geometry of the dish, otherwise it would only point where the earth was spinning, and deep observation requiring long exposures would not be possible.

[QUOTE=paindoc;51107201]What? Whyd they do that? Last I had heard (at a colloquim about this vague topic) the new big thing is networked smaller antenna systems, not fuck huge arrays.[/QUOTE] You may be thinking of [url=https://en.wikipedia.org/wiki/Canadian_Hydrogen_Intensity_Mapping_Experiment]CHIME?[/url]

[QUOTE=Cakebatyr;51107440]You may be thinking of [url=https://en.wikipedia.org/wiki/Canadian_Hydrogen_Intensity_Mapping_Experiment]CHIME?[/url][/QUOTE] I think he's thinking of stuff like the VLA

I see this and all i think about is the BF4 map [t]http://vignette2.wikia.nocookie.net/battlefield/images/d/d1/Mp_thedish.jpg/revision/latest?cb=20151229031556[/t]

[QUOTE=paindoc;51107201]What? Whyd they do that? Last I had heard (at a colloquim about this vague topic) the new big thing is networked smaller antenna systems, not fuck huge arrays.[/QUOTE] It doesn't look like the dish can be tilted, so I assume they aim the receiver instead to focus on a particular direction. I wonder if it would be possible to multi-focus the device...

All I can think of is how much soup we can have in that thing.

What a waste of money and space. Radio signals are the worst way to make yourself noticeable to other species.

[QUOTE=RaptorJGW;51108249]What a waste of money and space. Radio signals are the worst way to make yourself noticeable to other species.[/QUOTE] Yeah, we haven't gotten any replies yet. There must be a better way!

[QUOTE=RaptorJGW;51108249]What a waste of money and space. Radio signals are the worst way to make yourself noticeable to other species.[/QUOTE] Radio is more or less the only way, atleast when using mankind as the only case study we have. For optical/visible light comms to work, you need to have lasers down and even then its hard as balls to direct the beam ahead of time for it to hit Earth (Atleast when you have to compensate for tens or hundreds of lightyears distance). (We're just now getting [URL="https://en.wikipedia.org/wiki/OPALS"]space laser comms working[/URL]). Mankind invented radio decades before lasers were even considered, so it works in favor of the Drake Equation that we detect a civilization by radio before optical light comms. Also the fact that radio is the most easily passed EM range through our atmosphere.

[QUOTE=RaptorJGW;51108249]What a waste of money and space. Radio signals are the worst way to make yourself noticeable to other species.[/QUOTE] We should just launch up a gaint led light size of this dish into earth's orbit aimed at different star systems flickering morse code. It would be cheap as fuck to since its LEDs.

[QUOTE=Jelman;51107531]I see this and all i think about is the BF4 map [t]http://vignette2.wikia.nocookie.net/battlefield/images/d/d1/Mp_thedish.jpg/revision/latest?cb=20151229031556[/t][/QUOTE] That's based off the Arecibo observatory, which GoldenEye, Contact and Just Cause featured. [t]https://upload.wikimedia.org/wikipedia/commons/c/cd/Arecibo_Observatory_Aerial_View.jpg[/t] The art-deco pillars and Gregorian dome are visible in both

[QUOTE=Brancki427;51108368]We should just launch up a gaint led light size of this dish into earth's orbit aimed at different star systems flickering morse code. It would be cheap as fuck to since its LEDs.[/QUOTE] Or a giant parabolic mirror, reflect the Sun's light and modulate it with Morse. While causing a giant eclipse on Earth, cooling it down to solve climate change. Two Birds, One Giant Ass Stone. :v:

[QUOTE=cherry gmod;51107408]It's how they point the telescope at different parts of the sky, the focal point roves around the geometry of the dish, otherwise it would only point where the earth was spinning, and deep observation requiring long exposures would not be possible.[/QUOTE] I understand that, but I was more wondering why the dish was built so big if it's seemingly not leveraging that for doing larger wavelength stuff or just being a bigger "light (radio) bucket". And yeah, I was thinking of the VLA. But there's also another one under development, the Square Kilometer Array iirc

[QUOTE=Kyle902;51106787]This is cool as shit but its also really shitty that they kicked 8k people out to build it.[/QUOTE] ya, plus they probably just gave them a small check and dumped them in another village when they have massive empty cities [editline]26th September 2016[/editline] [QUOTE=sltungle;51106974]Wikipedia has a good comparison image of the size of this dish versus the Arecibo dish (which was famously seen in the James Bond movie Goldeneye): [IMG]http://i.imgur.com/fkNOT94.png[/IMG][/QUOTE] dats one big wok bowl there

You know how people say one way to detect intelligent life is signs of a Dyson sphere which I imagine is quite noticeable, what if we built something huge and cheap that simply creates a noticeable pattern from the suns light?

[QUOTE=paindoc;51108655]I understand that, but I was more wondering why the dish was built so big if it's seemingly not leveraging that for doing larger wavelength stuff or just being a bigger "light (radio) bucket". And yeah, I was thinking of the VLA. But there's also another one under development, the Square Kilometer Array iirc[/QUOTE] I really never understood the point of having one big dish like this. Things like the VLA can have variable wavelength detection using Interferometry. Is there any actual benefit to "seeing" the whole wave as it passes when we are talking about radio band waves?