[time-nuts] BYMLBI (Back Yard Medium LBI)
hmurray at megapathdsl.net
Fri Mar 18 15:29:34 EDT 2011
> From what I can learn about "seeing" the atmosphere instability is too
> great to allow making measurements optically in the 1 ms area.
There has been some interesting amateur work done on taking lots of
short-exposure pictures and sifting through them to find the good ones. (I
can't find a good URL right now.)
I don't know if any stars are bright enough to make that practical.
> The source has to be "not moving" (which I think leaves out using
> something like jupiter)
We know where Jupiter is. It should be possible to correct for that motion.
It's just another layer of software. :)
> As someone else has pointed out, measuring the earth surface position
> relative to spacecraft orbits, e.g. GPS, would be another technique.
That's an interesting idea, but I think all the orbit data for GPS satellites
is Earth relative rather than star relative. I wonder if the group that
drives the GPS satellites even knows their location relative to the stars.
I'll bet not.
These are my opinions, not necessarily my employer's. I hate spam.
More information about the time-nuts