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NOVAS3Spin Method
Transforms a vector from one coordinate system to another with same origin and axes rotated about the z-axis.

Namespace: ASCOM.Astrometry.NOVAS
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 6.0.0.0 (6.2.0.2774)
Syntax
public void Spin(
	double Angle,
	double[] Pos1,
	ref double[] Pos2
)

Parameters

Angle
Type: SystemDouble
Angle of coordinate system rotation, positive counterclockwise when viewed from +z, in degrees.
Pos1
Type: SystemDouble
Position vector.
Pos2
Type: SystemDouble
Position vector expressed in new coordinate system rotated about z by 'angle'.
Remarks