Beyond the horizon: Quantifying the full sky foreground wedge in the cylindrical power spectrum

Open Access

Table 1.

Notation used throughout this paper.

Notation	Explanation
b	Baseline vector (in meter)
b′	Baseline vector projected on the uv plane (in meter)
u	Baseline vector projected on the uv plane (in λ)
$\hat{s}$ $\hat{\boldsymbol{s}}$	Source (unit) vector
s′	Source vector projected on the tangent plane to the
	sky at the phase center
$\hat{p}$ $\hat{\boldsymbol{p}}$	Phase center (unit) vector
$\hat{z}$ $\hat{\boldsymbol{z}}$	Zenith (unit) vector
a	Projection of $\hat{s} - \hat{p}$ $\hat{\boldsymbol{s}}-\hat{\boldsymbol{p}}$ on the plane perpendicular to $\hat{z}$ $\hat{\boldsymbol{z}}$

ABC	Coordinate system with C pointing along
	the direction of phase center
XYZ	Coordinate system with Z pointing along
	the Earth’s axis
ENU	East-north-up coordinate system

H, α, δ	Hour angle, RA, Dec of source
H₀, α₀, δ₀	Hour angle, RA, Dec of phase center
t	Local siderial time
ϕ	Latitude
θ	Angle between a baseline on the Earth’s tangent
	plane and the east direction
a₀	Altitude (elevation) of the phase center
ψ	Angle between the source and the phase center
β	Angle between u and s′

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