>
>You mention laser based seti, I've never really looked into optical seti,
>could you by any chance pass me a url or reference why I can find out about
>it.
The best source of optical SETI information in this Universe is Dr. Stuart
Kingsley's Columbus Optical SETI Observatory website at
<http://www.coseti.org/>.
>While i'm on the subject, are there any natural sources of polarized light
>/ radio or micro waves,
Not tht I'm aware of.
>it occurs to me that a double signal (one with
>horizontal, one with vertical) polarization where one is inverted would
>provide excelent noise reduction accross long distances.
Absolutely! Carl Sagan's novel "Contact" had the signal from Vega
employing binary circular polarization modulation, although this trick was
omitted in the movie.
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