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Hello Bill

Thanks for your suggestion.

I guess the site could be surveyed first, using a transit theodolite, which
has an accurately calibrated horizontal circle, standing precisely where
the telescope is going to sit. Once an azimuth of 180 degrees is
determined, I could send my coachman to walk out in a Southerly direction
with a marker and plant it a mile or so away directly on the meridian
azimuth. Getting him in exactly the right place at that distance would be a
bit of a problem, but if I strung my gardeners out in a line, I could pass
messages down the line to go left a bit or right a bit. ;-)

I have a small wood to the South East which would tend to block my view of
bodies rising in that quarter, but my forester will make short work of that.

The telescope could then be set in its mounts, levelled off and aligned to
point at the distant marker.

Thanks again,

Geoffrey Kolbe

At 23:34 21/04/2008, you wrote:
>
>
>Measure the azimuth of a bright near-equatorial star at, say, 15
>degrees altitude in the east, and again 15 degrees altitude in the
>west.  (Mark these out on the ground, using local landmarks, not with
>a compass.)  Split the difference to get a north-south line.  You
>might have to do the two measurements at different times of the year.
>
>Do the same with the sun, around a solstice, or else applying some
>correction for its changing declination.


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