Square Kilometer Array Radio Telescope


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Michael Watson
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Message 1206740 - Posted: 16 Mar 2012, 23:07:58 UTC - in response to Message 1206275.

...
snip
...

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

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
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

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Message 1210629 - Posted: 27 Mar 2012, 8:31:12 UTC - in response to Message 1206740.

I think it's a quite brilliant project though I'm curious how they will deal with RFI.
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Message 1210882 - Posted: 28 Mar 2012, 4:45:13 UTC - in response to Message 1210629.

Both proposed sites, in South Africa and Australia, are really deserts with very low population and no airports or other RFI sources.
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Message 1225576 - Posted: 1 May 2012, 1:54:24 UTC - in response to Message 1205462.

Im sure if you had a job aligning telescopes could have a lifetime of work here. Id love to see its results if any as much as SETI. I almost feel we are missing something, frequency or type of communication. I cannot imagine another intelligent race not having a form of stellar communication. Could be burst communication incredible amount of information in a short duration message. Logic being stars move to and object moving one way communication releivent to distance speed and location. Sheer distances to exploration of the stars equal extreme distances. Us we humans stuck forever in our own solor system due to sheer distances to close stars.

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Message 1236538 - Posted: 25 May 2012, 14:55:49 UTC - in response to Message 1225576.

It seems that both bids win. ;)

http://www.news.com.au/breaking-news/national/ska-super-telescope-to-be-built-in-australia-south-africa/story-e6frfku9-1226367458337

Cheers.
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Message 1236560 - Posted: 25 May 2012, 15:42:36 UTC - in response to Message 1236538.
Last modified: 25 May 2012, 15:43:06 UTC

It seems that both bids win. ;)

http://www.news.com.au/breaking-news/national/ska-super-telescope-to-be-built-in-australia-south-africa/story-e6frfku9-1226367458337

WHAT?!

No bad thing, and good for gaining a larger array and redundant operation and from that hopefully more secure operation...

That also makes it a little more expensive and so I thought that option had been discounted.


Good it's going ahead and pan-continental as a bonus!

Here's hoping there's no political spoilers...

Keep searchin',
Martin
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Message 1236565 - Posted: 25 May 2012, 15:46:18 UTC - in response to Message 1236560.

we'll know for sure in 12 years
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Max Garth
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Message 1237868 - Posted: 27 May 2012, 6:07:23 UTC

How long to build... two weeks to put a 30' dish in place, if its all built in factories. But this lot isn't just "put in place".
Years, likely.
I watched a 30' dish go up in a couple of weeks, 42 years ago. VBG.
MaxG
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