>> If I were doing this in my backyard on a budget I'd mount a small
>> telescope nearly straight up so that a bright star would pass through
>> the field on several nights.  I'd measure the light of the star
>> through a slit and time the peak of the light each night.  I bet I
>> could get to about a microsecond.   I'm wondering what professionals
>> are doing in this field.

> I have references for VLBI, if you want. You probably cannot do optical
> accurately enough because of "seeing" effects, at least. 

What sort of accuracy can I get with:
  1) small/medium telescope in suburban back yard
  2) small/medium telescope out in the sticks
  3) big telescope in a good location




-- 
These are my opinions, not necessarily my employer's.  I hate spam.




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