[time-nuts] Re Danjon Astrolabe

Tom Van Baak tvb at leapsecond.com
Fri Sep 29 12:06:25 EDT 2006

> Accuracy still won't be much better than1% of the solar diameter or 
> about 1 second of time nowhere near the o.1 sec or better hoped for.
> Bruce


Can you show us how to derive the accuracy number?

I would have guessed that with fractional degree Al-El
steering, a rotary encoder, 12 hours of sampling, and
curve fitting that one could calibrate solar time against
a local UTC standard to a bit better than that.


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