Next message: Alexandre Eremenko: "Re: Visit to Freiberg"
Fred,
You wrote:
> By my calculations with your two sets of sights, the mean and
> standard deviation of Ho-Hc in minutes of arc were 0.096 +/- 0.195
> and 0.032 +/- 0.137. Were your previous sights this precise?
I did not reduce each sight. Only the averages.
My previous obsrvations with art horizon were generally less
precise. And many of them showed systematic error (overshot).
Same happened with star distances, with a larger error.
What does the second number (after +/-) in your message mean?
Maximal deviation from the average or standard deviation?
(I suppose the first number is the average Ho-Hc).
Alex.
