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Square Kilometer Array Radio Telescope
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Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
Hello fellow SETI@home cruncher What do you think about the following :-) ??? South Africa Wins scientific Panel's Backing to Host Square Kilometer Array Scope By Geoff Brumfiel and Nature magazine | March 12, 2012 The telescope is so sensitive that it could even pick up television signals from distant worlds — something that might aid in the search for extraterrestrial intelligence
Read more here: http://www.scientificamerican.com/article.cfm?id=south-africa-wins-panels http://www.scientificamerican.com/article.cfm?id=south-africa-wins-panels or here: Square Kilometer Array http://www.skatelescope.org/ |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
<Edit title> The Radio telescope is so sensitive that it could even pick up television signals from distant worlds — something that might aid in the search for extraterrestrial intelligence </Edit title> |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
Looks like it will make the VLA seem like a backyard toy in comparison. Now let's just hope some alien civilization is beaming something our way. Bob DeWoody My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events. |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
The Radio telescope is so sensitive that it could even pick up television signals From how far away ? |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
The Radio telescope is so sensitive that it could even pick up television signals Good question! any one got any Ideas ??? |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
The Radio telescope is so sensitive that it could even pick up television signals Good question! on the Square Kilometer Array Radio telescope web site: Square Kilometer Array http://www.skatelescope.org/ they have a web page where you can ask a question: http://www.skatelescope.org/contact/question/ So I asked the following question: It is said that the Square Kilometer Array Radio Telescope is so sensitive that it could even pick up television signals from distant worlds. What is the farthest distant away in Light years would these distant worlds be ? I'll report back here when they send me an answer. <Edit> an other question I'm going to ask is: It is said that the ... $2.1 ... Billion Dollar Square Kilometer Array Radio Telescope will be made up of some 3,000 dishes, each 15 meters in diameter. </Edit> |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
to answer one of my own question, I found the following: for the: Two Billion Dollar Square Kilometer Array Radio Telescope
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Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
The Radio telescope is so sensitive that it could even pick up television signals Good question! I found the following on their Square Kilometer Array Radio Telescope web site
also I asked the following question on their web site: What is the farthest distant away in Light years could these television signals from distant worlds distant worlds be detected here on on Earth ? I will report back here when I get a response from them. Read More here: Square Kilometer Array http://www.skatelescope.org/ |
John Neale Send message Joined: 16 Mar 00 Posts: 634 Credit: 7,246,513 RAC: 9 |
As the resident South African on these boards, may I say that we are hopeful that the SKA board will follow the scientific panel's recommendation and award the project to South Africa. It would mean a lot for scientific development in South Africa. Here's a link to the SKA South Africa project website. |
Nick Send message Joined: 11 Oct 11 Posts: 4344 Credit: 3,313,107 RAC: 0 |
The telescope is so sensitive that it could even pick up television signals from distant worlds For the alien TV signal to be discernible from the background white noise it's initial radiated power would have to have been in the tetra watts range. This power output level is possible but highly unlikely unless the alien TV station needed to transmit at these high power levels say to cover a very large planetary area/distance. So, it would only be a planet many times bigger than Earth that would require this high level of power output and then directed to outer space for it to reach us. The Kite Fliers -------------------- Kite fliers: An imaginary club of solo members, those who don't yet belong to a formal team so "fly their own kites" - as the saying goes. |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
I found the following on their Square Kilometer Array Radio Telescope web site The Square Kilometer Array Radio Telescope will be so sensitive that it will be able to detect an airport radar on a planet 50 light years away. they have a web page where you can ask a question about the SKA Radio Telescope here: http://www.skatelescope.org/contact/question/ for the: Two Billion Dollar Square Kilometer Array Radio Telescope
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Kafo Send message Joined: 17 Dec 00 Posts: 19 Credit: 15,432,367 RAC: 18 |
Wow, the SKA super computer will perform 1018 operations per second. Couple of those working together should be able to match my pocket calculator |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
Opps sorry typo there on my part ... Hi Kafo thank you for pointing out my typo in my post 1205596 Kafo wrote the following: Wow, the SKA super computer will perform 1018 operations per second. Couple of those working together should be able to match my pocket calculator Opps sorry typo there ... that should have read: The SKA super computer will perform - 10 to the 18th power - which = Just added 18 zeroes so it would be: 1,000,000,000,000,000,000 operations per second equivalent to the number of stars in three million Milky Way galaxies in order to process all the data that the SKA will produce. See this web page for Facts and figures about the Square Kilometer Array Radio Telescope: http://www.skatelescope.org/about/facts-figures/ so I guess that would be a little faster than your pocket calculator you think ??? __ LOL __ ;-) Best Wishes Byron |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1384 Credit: 2,098,506 RAC: 5 |
Using the claim that the SKA could detect an airport radar at 50 light years, the range of detectability of television signals is deducible. Air Traffic Control radars are reported to have on the order of 100 kilowatts, effective radiated power. Our own analog VHF television transmitters had effective radiated powers up to about 300 KW, giving a range of more than 50, but less than 100 light years. Analog UHF television transmitters had ERPs of up to 5000 KW, which would give a comparative range of somewhere between 300 and 400 light years. While the existence of such signals might be detectable, it's not likely that the content could be discerned. Michael |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
Dear Michael, Thank you for that information. Best Wishes Byron |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
... hi Michael, I'm sorry if this is a dumb question but ... do you mean that we could not decode or understand the signals from between 300 and 400 light years away ... but could we conclude that the signals are from an extra terrestrial intelligence ? and not just some random noise or static ? I'm sorry if I'm not making my self clear ? Byron |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
We should be able to tell if they contain intelligence. Decoding might be a problem but then we found the Rosetta stone. |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1384 Credit: 2,098,506 RAC: 5 |
Television signals use a lot of bandwidth. The associated carrier is very narrowband in comparison. The wide sidebands contain the picture and sound information, and about half the signal power. The carrier has the other 50 % of the power. Because of this concentration of power in the carrier, it would be very much easier to detect than the video or audio information, especially when it has grown extraordinarily weak from traveling over interstellar distances. Michael... |
Slavac Send message Joined: 27 Apr 11 Posts: 1932 Credit: 17,952,639 RAC: 0 |
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tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
Both proposed sites, in South Africa and Australia, are really deserts with very low population and no airports or other RFI sources. Tullio |
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