* Richard Casady wrote, On 8/20/2007 10:57 AM:
On Mon, 20 Aug 2007 09:40:34 -0400, Wayne.B
wrote:

On Mon, 20 Aug 2007 22:02:33 +1000, Herodotus
wrote:

I have looked at these links and have spent the last few hours
wandering about the web. What I cannot find out is whether I can
receive these photos south of the equator. Seems like a great system
at a reasonable cost. Can you advise please.
That's really a two part question. I'm reasonably certain that you
could receive the pictures but I don't know if the satellites are set
up to capture southern hemisphere images.

Is it worth noting that CRTs need to be aligned properly, according to
the local version of the earths magnetic field?It is different
according to the latitude, especially which hemisphere you are in.
Flat screens don't care.

You just turn the tube up-side-down for the Southern hemisphere.

Really.

When I worked on an orbiting telescope we discovered that the star
trackers had insufficient magnetic shielding. I had to create an
ephemeris database for the magnetic field in orbit, and apply the
corrections to the nav solution.

I doubt there are many using CRTs for computers on boats. A bigger
issue is compass corrections.