Parallactic angle
= Parallactic angle
{wiki}
The parallactic angle is the angle between the great circles from an observed direction toward the celestial pole and toward the zenith. Its change gives sky rotation in pupil-stabilized observations.
= Parallactic angle
{wiki}
The parallactic angle is the angle between the great circles from an observed direction toward the celestial pole and toward the zenith. Its change gives sky rotation in pupil-stabilized observations.