🚀 go-pugleaf

In article <Ngy8wB2w164w@k5qwb.lonestar.org> lrk@k5qwb.lonestar.org (Mr. Lyn R. Kennedy) writes:
>It seems it would be more feasable to take several pictures by the same 
>satellite at slightly different locations and combine them 
>electronically. I'm not sure I understand the limits of this but I've 
>been led to beleive that it works. A similar method is being used with 
>radio-telescopes, recording the information simultaneously at several 
>sites and then combining the data to get better resolution.

This is called VLBI (Very Long Baseline Interferometry). You make
*simultaneous* high speed recordings of a single source at widely
spaced sites.  The recordings must preserve the amplitude *and phase*
of the incident EM radiation, and they must be very precisely
timestamped (to allow accurate alignment when the signals are
combined). Although this is practical (although tricky) at radio
frequencies, I *seriously* doubt the technology is in hand to do it at
optical frequencies on a satellite. I don't think there are any A/D
converters yet that can sample at the Nyquist rate for green light,
for example.

Phil