altaz_to_nominal#
- ctapipe.coordinates.altaz_to_nominal(az, alt, pointing_az, pointing_alt) Quantity[source]#
Compute nominal (FOV) coordinates from alt/az coordinates.
This can be used in a FeatureGenerator or ExpressionEngine to get a single column with fov_lon, fov_lat coordinates.
- Returns:
- u.Quantity:
2D array of coordinates with 2 columns: fov_lon, fov_lat