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Dear Fred,

Thank you for your message of Mon Nov 28 2005 12:21:44 EST.
(It is listed on the list archive between April 2 and 3,
so I can be excused for discovering it only today:-)

I recall that you wrote (presumably in November):

>Your data look very good. I am not sure, however, that you can
>attribute the divergence of observation from prediction to arc error
>with so few data.

This was only a small sample of my data.
Small but typical. To summarize my 2 years of obsevations
I would say that I have an error of +.3 to +.7
more frequently than I dont.

And I almost never have negative errors.

The most frustrating thing is that I measure one
chosen distance of say 38 degrees night after night,
many many times, taking all possible precasautions,
and I obtain this +.3 error again and again.

Then I take Bill's Astra, and the distance is OK.
Then I take my SNO-T again and again get +0.3 error.

I think human errors are excluded here (by Bill's Astra).
Random errors are excluded by consistency of the biased results.
So what is this, I don't really know:-(

Alex.

   

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