On 12/24/2011 8:10 PM, [email protected] wrote: > John Hasler <[email protected]> wrote: >>> The open sky nearest the OPERA detector is straight up through 1400m of >>> rock. >> >> Jim Pennino writes: >>> And the easiest open sky to get to is horizontally down the tunnel to >>> the entrance which is next to a freeway. >> >> Yes, the entrance is next to a freeway. The entrance to the LNGS >> facility where the OPERA detector is located is near the middle of the >> 10 km long Gran Sasso highway tunnel. > > The bottom line is that the only thing that is relevant is how easy it is > to get to a GPS antenna with an open view of the sky. > > Everything else is bloviation.
GPS is not used for this kind of thing, they are too inaccurate, so it doesn't matter. They use atomic clocks. Danny _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
