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tu144d
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Arecibo observatory to close

Thu Nov 19, 2020 9:01 pm

https://www.nature.com/articles/d41586-020-03270-9

Super sad news for me having grown up in PR. After two supporting cables broke on multiple ocassions it was determined a collapse could occur imminently and a controlled demotion is the best resort. I took many field trips out there when young and as a high school student knew scientists who worked there who were able to give me pretty extensive insider tours. It inspired me to become a scientist and even though I studied Aero Engineering I minored in Astronomy because of the passion that was stirred in me on my trips out there.
 
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casinterest
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Re: Arecibo observatory to close

Thu Nov 19, 2020 9:11 pm

Bummer. Lot's of great science out there.

https://www.youtube.com/watch?v=C9DuMK0uo1c
Twenty years from now you will be more disappointed by the things you didn't do than by the ones you did..So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.--Mark Twain
 
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DocLightning
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Re: Arecibo observatory to close

Thu Nov 19, 2020 9:32 pm

That is a bummer. However, the facility is really old. Maybe we can build a new one eventually.
-Doc Lightning-

"The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars."
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ER757
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Re: Arecibo observatory to close

Thu Nov 19, 2020 10:02 pm

DocLightning wrote:
That is a bummer. However, the facility is really old. Maybe we can build a new one eventually.

That would be great, but funding could be really difficult.
Paging Jeff Bezos.......
 
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casinterest
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Re: Arecibo observatory to close

Thu Nov 19, 2020 10:17 pm

ER757 wrote:
DocLightning wrote:
That is a bummer. However, the facility is really old. Maybe we can build a new one eventually.

That would be great, but funding could be really difficult.
Paging Jeff Bezos.......



With the James Webb launching soon ,I guess this facility just can't justify itself much.
Twenty years from now you will be more disappointed by the things you didn't do than by the ones you did..So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.--Mark Twain
 
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c933103
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Re: Arecibo observatory to close

Thu Nov 19, 2020 10:39 pm

casinterest wrote:
ER757 wrote:
DocLightning wrote:
That is a bummer. However, the facility is really old. Maybe we can build a new one eventually.

That would be great, but funding could be really difficult.
Paging Jeff Bezos.......



With the James Webb launching soon ,I guess this facility just can't justify itself much.

James Webb observe visible light and infrared. This observe radio wave.
It's pointless to attempt winning internet debate. 求同存異. よく見て・よく聞いて・よく考える
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cpd
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Re: Arecibo observatory to close

Thu Nov 19, 2020 11:10 pm

casinterest wrote:
Bummer. Lot's of great science out there.

https://www.youtube.com/watch?v=C9DuMK0uo1c


Question is, do we need science anymore in a time of alternative facts and fake news?

Science has even become a political football.

I'm firmly in the camp that the more scientific research the better. Obviously this facility needs to be demolished given the risk it poses of collapsing totally.
 
phatfarmlines
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Re: Arecibo observatory to close

Thu Nov 19, 2020 11:20 pm

casinterest wrote:
Bummer. Lot's of great science out there.

https://www.youtube.com/watch?v=C9DuMK0uo1c


And attempts by a Bond villain to take out England by taking control of the observatory.

https://www.youtube.com/watch?v=jp9tENRDVzA
 
tu144d
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Posts: 201
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Re: Arecibo observatory to close

Thu Nov 19, 2020 11:40 pm

phatfarmlines wrote:
casinterest wrote:
Bummer. Lot's of great science out there.

https://www.youtube.com/watch?v=C9DuMK0uo1c


And attempts by a Bond villain to take out England by taking control of the observatory.

https://www.youtube.com/watch?v=jp9tENRDVzA


"For England James?..No, for me". One of my fav Bond movies. Feels like it was just yesterday I was 12 watching it in the theaters. Not to mention I was ruthless playing the game with friends. I still ocassionally play it on the emulator when nostalgia creeps in
 
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Tugger
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Re: Arecibo observatory to close

Thu Nov 19, 2020 11:49 pm

It is sad to see such a historic device decay into it's current state. Sad to see it go.

China has a new and larger one that just opened:
https://en.wikipedia.org/wiki/Five-hund ... _Telescope

Tugg
I don’t know that I am unafraid to be myself, but it is hard to be somebody else. - W. Shatner
There are many kinds of sentences that we think state facts about the world but that are really just expressions of our attitudes. - F. Ramsey
 
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Revelation
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Re: Arecibo observatory to close

Sat Nov 28, 2020 4:56 pm

phatfarmlines wrote:
casinterest wrote:
Bummer. Lot's of great science out there.

https://www.youtube.com/watch?v=C9DuMK0uo1c


And attempts by a Bond villain to take out England by taking control of the observatory.

https://www.youtube.com/watch?v=jp9tENRDVzA

And Matthew McConoughy (sp?) bedded Jodie Foster there, according to the plot of the movie Contact ...
Wake up to find out that you are the eyes of the world
The heart has its beaches, its homeland and thoughts of its own
Wake now, discover that you are the song that the morning brings
The heart has its seasons, its evenings and songs of its own
 
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Revelation
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Re: Arecibo observatory to close

Sat Nov 28, 2020 5:06 pm

Tugger wrote:
It is sad to see such a historic device decay into it's current state. Sad to see it go.

China has a new and larger one that just opened:
https://en.wikipedia.org/wiki/Five-hund ... _Telescope

Tugg

Interesting article.

The bigger size of FAST gives it a wider field of view, but makes it unable to pick up higher frequencies / shorter wavelengths, relative to Arecibo.

Sacrifices were made to get FAST constructed:

A 65-person village was relocated from the valley to make room for the telescope[15] and an additional 9,110 people living within a 5 km radius of the telescope were relocated to create a radio-quiet area.[15][16] About 500 families tried to sue the local government. Villagers accused the government of forced demolitions, unlawful detentions and not giving compensation.[17] The Chinese government spent around $269 million in poverty relief funds and bank loans for the relocation of the local residents, while the construction of the telescope itself cost US$180 million.[18]

And unlike Arecibo, it is a receive-only facility:

Arecibo's larger secondary platform also houses several transmitters, making it one of only two instruments in the world capable of radar astronomy.[citation needed] The NASA-funded Planetary Radar System allows Arecibo to study solid objects from Mercury to Saturn, and to perform very accurate orbit determination on near-earth objects, particularly potentially hazardous objects. Arecibo also includes several NSF funded radars for ionospheric studies. These powerful transmitters are too large and heavy for FAST's small receiver cabin, so it will not be able to participate in planetary defence.

Regardless, it has made some remarkable discoveries:

The telescope made its first discovery, of two new pulsars, in August 2017.[10] The new pulsars PSR J1859-01 and PSR J1931-02—also referred to as FAST pulsar #1 and #2 (FP1 and FP2), were detected on 22 and 25 August 2017; they are 16,000 and 4,100 light years away, respectively. Parkes Observatory in Australia independently confirmed the discoveries on 10 September 2017. By September 2018, FAST had discovered 44 new pulsars.[11][12][13]
Wake up to find out that you are the eyes of the world
The heart has its beaches, its homeland and thoughts of its own
Wake now, discover that you are the song that the morning brings
The heart has its seasons, its evenings and songs of its own
 
WIederling
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Re: Arecibo observatory to close

Sat Nov 28, 2020 5:50 pm

Tugger wrote:
It is sad to see such a historic device decay into it's current state. Sad to see it go.

China has a new and larger one that just opened:
https://en.wikipedia.org/wiki/Five-hund ... _Telescope


Interesting: the article spends more room on "why Arecibo is better" than on the title giving object.

I suppose the Chinese have spent some thought on their layout.
Would have been nice if the WP article had given room to those decisions.

Quite a bit more "On Topic" information here:
https://de.wikipedia.org/wiki/FAST_(Radioteleskop)
use google translate ..

The mirror is not static but formed into a paraboloid around the currently active viewing axis.
Freq. range is from 70MHz to 3GHz to be expanded to 8GHz in the future.
Murphy is an optimist
 
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Classa64
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Re: Arecibo observatory to close

Sat Nov 28, 2020 9:43 pm

Sad to see it go. Its a loss to science but in its current state is even to dangerous to try and fix.
But if you are a gamer, Battlefield 4 (Video Game came out in 2013 ) was set in the war of 2020 and you could set C4 on the support cables to destroy the entire dish and structures, who new it would end up doing it to itself.
Rouge Transmission was the map. https://www.youtube.com/watch?v=b2vwuY2gZV8
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CitizenJustin
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Re: Arecibo observatory to close

Mon Nov 30, 2020 11:02 pm

Does SETI still use Arecibo? I donate to them monthly, so I hope it doesn’t cause them any inconvenience.
 
ltbewr
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Re: Arecibo observatory to close

Tue Dec 01, 2020 4:45 pm

On Tuesday morning, the receiver component has crashed into the dish, meaning the main observatory facility is completely destroyed. This is a sad day for those that study our universe and for the people of Puerto Rico https://apnews.com/article/technology-a ... 52348e712e
 
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speedygonzales
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Re: Arecibo observatory to close

Tue Dec 01, 2020 7:39 pm

ltbewr wrote:
On Tuesday morning, the receiver component has crashed into the dish, meaning the main observatory facility is completely destroyed. This is a sad day for those that study our universe and for the people of Puerto Rico https://apnews.com/article/technology-a ... 52348e712e

Photos of the collapse:
https://www.noticel.com/galeria/2020120 ... e-arecibo/
Ignorance kills. :tombstone:
 
slider
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Re: Arecibo observatory to close

Wed Dec 02, 2020 1:55 pm

tu144d wrote:
phatfarmlines wrote:
casinterest wrote:
Bummer. Lot's of great science out there.

https://www.youtube.com/watch?v=C9DuMK0uo1c


And attempts by a Bond villain to take out England by taking control of the observatory.

https://www.youtube.com/watch?v=jp9tENRDVzA


"For England James?..No, for me". One of my fav Bond movies. Feels like it was just yesterday I was 12 watching it in the theaters. Not to mention I was ruthless playing the game with friends. I still ocassionally play it on the emulator when nostalgia creeps in


Goldeneye is probably the best Brosnan Bond film. Love it.
 
danman132x
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Re: Arecibo observatory to close

Thu Dec 03, 2020 7:13 pm

Very hard to watch this. Great video, and super lucky the drone was there at the right time. Watching those cables snap is insane.
https://players.brightcove.net/67925613 ... 3883083001
 
tu144d
Topic Author
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Re: Arecibo observatory to close

Sun Dec 20, 2020 4:54 pm

slider wrote:
tu144d wrote:
phatfarmlines wrote:

And attempts by a Bond villain to take out England by taking control of the observatory.

https://www.youtube.com/watch?v=jp9tENRDVzA


"For England James?..No, for me". One of my fav Bond movies. Feels like it was just yesterday I was 12 watching it in the theaters. Not to mention I was ruthless playing the game with friends. I still ocassionally play it on the emulator when nostalgia creeps in


Goldeneye is probably the best Brosnan Bond film. Love it.


Absolutely agreed. It's one of the top ones IMHO. Sick joke, but if the filming crew had just waited 15 years they could've gotten the footage of the dish collapsing of on top dear old Ale c without miniatures
 
tu144d
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Re: Arecibo observatory to close

Sun Dec 20, 2020 4:56 pm

I've been on a news black out for a a few weeks just to alleviate my COVID couped up depression but that drone footage of the collapse is heartbreaking
 
Redd
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Re: Arecibo observatory to close

Tue Dec 22, 2020 8:09 pm

cpd wrote:
casinterest wrote:
Bummer. Lot's of great science out there.

https://www.youtube.com/watch?v=C9DuMK0uo1c


Question is, do we need science anymore in a time of alternative facts and fake news?

Science has even become a political football.

I'm firmly in the camp that the more scientific research the better. Obviously this facility needs to be demolished given the risk it poses of collapsing totally.


I recently overheard a conversation, where one person told the other that 'my facts are different from your facts'. I thought that was fun.
 
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casinterest
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Re: Arecibo observatory to close

Tue Dec 22, 2020 8:17 pm

Interesting idea for a replacement.

https://thehill.com/opinion/technology/ ... s-far-side

It would be a heck of an infrastructure project.

"“A radio array able to capture these data would probably use millions of simple radio antennas deployed over an area a hundred kilomet[er]s across on the Moon’s far side, operated by humans and robots. Infrared telescopes of unprecedented scale could be built in cold craters near the lunar south pole, in permanent shadow where temperatures as low as 30 kelvin have been measured. With no atmosphere to absorb radiation and block signals, Moon-based scopes could yield fantastic images of exoplanets and the oldest galaxies in the Universe.“"
Twenty years from now you will be more disappointed by the things you didn't do than by the ones you did..So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.--Mark Twain

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