Computing unbalanced moments in the az arm


Abbreviations used:
W   : weight
Cm : center of mass
E    : encoder reading of az,za, or dome
gr   : gregorian dome
ch   : carriage house
za   : zenith angle
tq    : torque
R     : radius from center of curvature.
Eoff : encoder offset to go from optic axis  to center off mass

Computing the unbalance:

  The moments in the azimuth arm come from:
    Values we know from measurement:
    Values we use that have not been measured.
    Values to be computed:

Plotting the unbalance:

    The plots show the unbalanced moments in the azimuth arm (.ps) (.pdf) for various configurations.