hera_sim.antpos.HexArray¶

class hera_sim.antpos.HexArray(sep=14.6, split_core=True, outriggers=2)[source]¶

Build a hexagonal array configuration, nominally matching HERA.

Parameters:

sep (int, optional) – The separation between adjacent grid points, in meters. Default separation is 14.6 meters.
split_core (bool, optional) – Whether to fracture the core into tridents that subdivide a hexagonal grid. Loses \(N\) antennas. Default behavior is to split the core.
outriggers (int, optional) – The number of rings of outriggers to add to the array. The outriggers tile with the core to produce a fully-sampled UV plane. The first ring corresponds to the exterior of a hex_num=3 hexagon. For \(R\) outriggers, \(3R^2 + 9R\) antennas are added to the array.

Methods

`__call__`(hex_num, **kwargs)	Compute the positions of the antennas.
`get_aliases`()	Get all the aliases by which this model can be identified.
`get_model`(mdl)	Get a model with a particular name (including aliases).
`get_models`([with_aliases])	Get a dictionary of models associated with this component.

Attributes

`attrs_to_pull`	Mapping between parameter names and Simulator attributes
`is_multiplicative`	Whether this systematic multiplies existing visibilities
`is_randomized`	Whether this systematic contains a randomized component
`return_type`	Whether the returned value is per-antenna, per-baseline, or the full array