Enum RotType

Enum Documentation

enum lsst::afw::image::RotType

Type of rotation.

Values:

UNKNOWN

Rotation angle is unknown. Note: if there is no instrument rotator then it is better to compute SKY or HORIZON and use that rotation type rather than specify UNKNOWN.

SKY

Position angle of focal plane +Y, measured from N through E. At 0 degrees, +Y is along N and +X is along E/W depending on handedness. At 90 degrees, +Y is along E and +X is along S/N depending on handedness.

HORIZON

Position angle of focal plane +Y, measured from +Alt through +Az. At 0 degrees, +Y is along +Alt and +X is along +/-Az, depending on handedness. At 90 degrees, +Y is along +Az and +X is along -/+Alt, depending on handedness.

MOUNT

The position sent to the instrument rotator; the details depend on the rotator.