NominalFrame

class ctapipe.coordinates.nominal_frame.NominalFrame(*args, **kwargs)

Bases: BaseCoordinateFrame

Nominal coordinate frame.

A Frame using a UnitSphericalRepresentation. This is basically the same as a HorizonCoordinate, but the origin is at an arbitrary position in the sky. This is what astropy calls a SkyOffsetCoordinate

If the telescopes are in divergent pointing, this Frame can be used to transform to a common system.

Attributes:

origin: astropy.coordinates.SkyCoord[AltAz]

Origin of this frame as a HorizonCoordinate

obstime: astropy.time.Time

Observation time

location: astropy.coordinates.EarthLocation

Location of the telescope

Attributes Summary

default_differential	Default representation for differential data (e.g., velocity)
default_representation	Default representation for position data
frame_attributes
frame_specific_representation_info	Mapping for frame-specific component names
location	A frame attribute
name
obstime	A frame attribute
origin	A frame attribute

Attributes Documentation

default_differential

Default representation for differential data (e.g., velocity)

default_representation

Default representation for position data

frame_attributes = {'location': <astropy.coordinates.attributes.EarthLocationAttribute object>, 'obstime': <astropy.coordinates.attributes.TimeAttribute object>, 'origin': <astropy.coordinates.attributes.CoordinateAttribute object>}

frame_specific_representation_info

Mapping for frame-specific component names

location

A frame attribute

No default value

name = 'nominalframe'

obstime

A frame attribute

No default value

origin

A frame attribute

No default value