L e v e l    1    H e l p


In Euclidean Geometry which is a first Geometry studied in human 
schools, the distance to star s can be measured if to know two 
numbers: path p and azimuth n:

                 
                *s        
                |\        
                | \       |c
                |  \      |
                |   \     |
              d |    \    |
                |     \ n |
                |      \  |
                | A     \ |
                |________\|
                a   p     b  


It is assumed that observer started moving from point a in direction
ab which had right angle A to direction to star as: A = 90^

In point b, observer measured the azimuth n to s counterclockwisely
counted from perpendicular bc to ab. Observer has
       
          tan(n) = p/d,         (*)

where d is distance to s. Consequently, d = p/tan(n).
To have observable n, the distance must be enough big. For example,
p can be a displacment of Earch between its summer a and winter b
positions.


SCViyager Driver can select star for measurement by keyboard combination
Ctr + M (See Help for more details.) Then Driver can turn the Vessel
in perpendicular direction (using right arrow) and move. 
Angleminer will automatically display the azi. 
There is even more comfortable way of doing this:
(Ct 0,) Ct M, ..., Ct D, Ct P, Ct >, (Ct F,...) ->, ... 
   where
   Ct 0       - sets Vessel to By-Driver mode,
   Ct M, ...  - selects desired Star/Hill,
   Ct D       - turns driver to selected object,
   Ct P       - sets Vessel to By-Autopilot mode,
   Ct >       - turns Vessel precisely on 90^,
   Ct F, ...  - increses speed,
   ->, ...    - moving and measuring ...


In real life, formula (*) can be different. However, if scale of 
Space "curvature" is greater than distance to star, then formula (*)
is expected to work. In turn, for more distant stars, one can
use deviations from (*) to get information about the curvature.


Vessel's computer diligently draws the path and its parameters on 
three left scratch pads of the screen: 
   on the top ("north-west" pad) - for Hill measurements.
   on the middle ("west" pad)    - for Star measurements,
   on the bottom ("south-west")  - "START MAP" for path.
On this pads, computer interprets moves and angles as belonging
to "Euclidean world".
  
