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+--- Thread: Image of a Black Hole (/thread-4228.html)
Image of a Black Hole - PaulP - 04-11-2019
Pretty amazing stuff. The young lady who came up with the crucial algorithm seems to be flying under the radar. Super effort Katie Bouman.
https://www.theguardian.com/science/2019/apr/10/black-hole-picture-captured-for-first-time-in-space-breakthrough
And a story from 2016 before the image was created :
http://news.mit.edu/2016/method-image-black-holes-0606
Re: Image of a Black Hole - flyboy77 - 04-11-2019
I'd call it advanced CGI -nothing more,nothing less!
Quote:Although the telescopes are not physically connected, they are able to synchronize their recorded data with atomic clocks — hydrogen masers — which precisely time their observations. These observations were collected at a wavelength of 1.3 mm during a 2017 global campaign. Each telescope of the EHT produced enormous amounts of data — roughly 350 terabytes per day — which was stored on high-performance helium-filled hard drives. These data were flown to highly specialised supercomputers — known as correlators — at the Max Planck Institute for Radio Astronomy and MIT Haystack Observatory to be combined. They were then painstakingly converted into an image using novel computational tools developed by the collaboration.
https://eventhorizontelescope.org/
Re: Image of a Black Hole - Thryleon - 04-11-2019
(04-11-2019, 03:59 AM)PaulP link Wrote:Pretty amazing stuff. The young lady who came up with the crucial algorithm seems to be flying under the radar. Super effort Katie Bouman.
https://www.theguardian.com/science/2019/apr/10/black-hole-picture-captured-for-first-time-in-space-breakthrough
And a story from 2016 before the image was created :
http://news.mit.edu/2016/method-image-black-holes-0606
Here I was thinking we were talking about Carlton Football club and its uncanny ability to turn coaches and players into remnants of football people.
Re: Image of a Black Hole - PaulP - 04-11-2019
(04-11-2019, 04:14 AM)flyboy77 link Wrote:I'd call it advanced CGI -nothing more,nothing less!
https://eventhorizontelescope.org/
Even that is a massive effort and achievement, and IMO, more than worthy of a warm welcome.
Re: Image of a Black Hole - LP - 04-11-2019
CGI starts with man made data, usually generated from a CAD program as an STL file, it's not a measurement.
The effort is extraordinary, especially when you realise some media groups initially reported it wrongly as the black hole in our local galactic center about 100,000 light years away.
The image is the center of M87 53,000,000 light years away!
I read a crazy human analogy about the effort,
"It's equivalent to siting in a cafe in Paris, and reading a newspaper left on a table in New York!"
another analogy,
"Taking a Full HD photograph of a dough-nut somebody left behind on the moon!"
(That is if that wasn't all a conspiracy, the existence of moon dough-nuts! )
a joking analogy,
"Like feeling the flap of a butterfly's wings from the other side of the planet, but only if the planet is really round!"
On a more serious note, the way it's reported is misleading even when they correctly identify the source. The image actually shows the shadow cast by the central black hole, not the black hole or the black hole event horizon. You can think of it as a fog that dims the light surrounding the black hole!
However from measuring this shadow they get an indirect measure of the black hole itself and it's event horizon, as well as new ways to determine new or confirm old facts about things like relativity, dark energy and dark matter.
Re: Image of a Black Hole - Baggers - 04-11-2019
(04-11-2019, 07:05 AM)LP link Wrote:CGI starts with man made data, usually generated from a CAD program as an STL file, it's not a measurement.
The effort is extraordinary, especially when you realise some media groups initially reported it wrongly as the black hole in our local galactic center about 100,000 light years away.
The image is the center of M87 53,000,000 light years away!
A read a crazy human analogy about the effort,
"It's equivalent to siting in a cafe in Paris, and reading a newspaper left on a table in New York!"
another analogy,
"Taking a Full HD photograph of a dough-nut somebody left behind on the moon!"
(That is if that wasn't all a conspiracy, the existence of moon dough-nuts! )
a joking analogy,
"Like feeling the flap of a butterfly's wings from the other side of the planet, but only if the planet is really round!"
On a more serious note, the way it's reported is misleading even when they correctly identify the source. The image actually shows the shadow cast by the central black hole, not the black hole or the black hole event horizon. You can think of it as a fog that dims the light surrounding the black hole!
However from measuring this shadow they get an indirect measure of the black hole itself and it's event horizon, as well as new ways to determine new or confirm old facts about things like relativity, dark energy and dark matter.
Ripper stuff, Spotted One. Thank you for that. I confess to being fascinated with all things science and the cosmos. My first and favourite toy was a telescope, second a microscope, third... well, that's another subject best left out of here, let's just say a healthy young lad's favourite toy!!!
I find the concept of a black hole absolutely captivating. I think I heard it described as if it were the size of a marble it would weigh about the same as the Earth! Holy mackerel. That's just about as much density there is between Andrew Bolt's ears! In one respect I'd love to live another 100 years just to observe the scientific discoveries, and perhaps experience space travel.
Re: Image of a Black Hole - Baggers - 04-11-2019
(04-11-2019, 05:02 AM)Thryleon link Wrote:Here I was thinking we were talking about Carlton Football club and its uncanny ability to turn coaches and players into remnants of football people.
) ) ) you're in good form, three Leos. Another goodun.
Re: Image of a Black Hole - Thryleon - 04-11-2019
(04-11-2019, 07:46 AM)Baggers link Wrote:
Unfortunately it's all I've got at the moment. We are a such a soft target at the moment like dr. Edelston minus viagra.
Re: Image of a Black Hole - Baggers - 04-12-2019
(04-11-2019, 12:10 PM)Thryleon link Wrote:Unfortunately it's all I've got at the moment. We are a such a soft target at the moment like dr. Edelston minus viagra.
) ) ) ) you writing this stuff down! You gotta take your show on the road... the Melb International Comedy Festival needs your material... ) )
Re: Image of a Black Hole - flyboy77 - 04-12-2019
(04-11-2019, 07:05 AM)LP link Wrote:CGI starts with man made data, usually generated from a CAD program as an STL file, it's not a measurement.
The effort is extraordinary, especially when you realise some media groups initially reported it wrongly as the black hole in our local galactic center about 100,000 light years away.
The image is the center of M87 53,000,000 light years away!
A read a crazy human analogy about the effort,
"It's equivalent to siting in a cafe in Paris, and reading a newspaper left on a table in New York!"
another analogy,
"Taking a Full HD photograph of a dough-nut somebody left behind on the moon!"
(That is if that wasn't all a conspiracy, the existence of moon dough-nuts! )
a joking analogy,
"Like feeling the flap of a butterfly's wings from the other side of the planet, but only if the planet is really round!"
On a more serious note, the way it's reported is misleading even when they correctly identify the source. The image actually shows the shadow cast by the central black hole, not the black hole or the black hole event horizon. You can think of it as a fog that dims the light surrounding the black hole!
However from measuring this shadow they get an indirect measure of the black hole itself and it's event horizon, as well as new ways to determine new or confirm old facts about things like relativity, dark energy and dark matter.
It's still CGI.