archiv~1: Re: [Fwd: Review of Possible EQ Peg SETI Hits]

Re: [Fwd: Review of Possible EQ Peg SETI Hits]

Dr. H. Paul Shuch ( (no email) )
Mon, 23 Nov 1998 09:32:06 -0500

At 08:36 AM 11/23/98 -0500, Terry wrote:

>how far away
>does a signal have to be in order for
>it to be seen at the same spot in the sky from both
>Puerto Rico and England at the same time?

You misunderstand how the Project Phoenix Follow-Up Detection Device (FUDD)
works. It does *not* do simultaneous observations. Any signal detected at
the primary antenna (in this case, Arecibo) is sought at the FUDD (in this
case, Jodrell Bank) a full fifteen minutes later, at that spot in the sky
to which sidereal motion would have displaced a truly extra-solar source
moving with sidereal time. This is intended to effectively rule out
terrestrial interference, aircraft, spacecraft, planetary or lunar
reflections, and signals from interstellar spacecraft moving with respect
to the background stars.

H. Paul Shuch, Ph.D. Executive Director, The SETI League, Inc.
433 Liberty Street, PO Box 555, Little Ferry NJ 07643 USA
voice (201) 641-1770; fax (201) 641-1771; URL
email work:; home:

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