48 deg 36 N
122 deg 22 W
Original Message Follows
From: John Carmichael [EMAIL PROTECTED]
To: Brooke Clarke [EMAIL PROTECTED]
CC: Sundial List sundial@uni-koeln.de
Subject: Re: Google Earth accuracy/finding North
Date: Mon, 24 Jul 2006 08:37:37 -0700
When my sundial customers ask me
: Re: Google Earth accuracy
Hi Roger:I have a web page listing the U.S. LORAN-C
stations. And with the Google imaging you can easily see the transmitter
antennas which are rather large since the frequency is 100 kHz. The
transmitters are in precisely known locations (WGS-84
Bill G. said:
There is a large monument in Ecuador that
marks the exact location of the equator, so they claim. Google Earth puts
it about 780 feet south of the equator. Any thoughts on who is more
accurate: Google Earth or the Ecuadorian surveyors?
I have also noticed that, according
List:
I'm sure Mike meant that the Greenwich Meridian Line is about 5 west, not 5' west, of where it is shown on Google Earth. (I just looked to confirm this!)
This discrepancy is simply due to Google Earth's adopted geodetic datum, WGS84. GPS receivers can often be set to show coordinates
Hi Roger:
I have a web page listing the U.S. LORAN-C stations. And with the
Google imaging you can easily see the transmitter antennas which are
rather large since the frequency is 100 kHz. The transmitters are in
precisely known locations (WGS-84), but there is still a small amount
of error.
