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Table 1.

System parameters and resulting noise.

ν (GHz) 230 230 690 690
D (m) 4.4 25 4.4 25

Tsys (K) 150 150 150 150
ηap 0.58 0.58 0.58 0.58
ηcor 0.97 0.97 0.97 0.97
ηclock 0.87 0.87 0.87 0.87
Δν (GHz) 5 5 5 5
tint, center (s) 453 453 453 453
tint, edge (s) 94 94 32 32

SEFD (Jy) 5.6 × 104 1.7 × 103 5.6 × 104 1.7 × 103
σcenter (Jy) 0.030 0.00092 0.030 0.00092
σedge (Jy) 0.065 0.0020 0.11 0.0035

Notes. σ-values were calculated with Eqs. (3) and (4), using different frequencies and dish sizes at the center (long integration time) and edge (short integration time) of the uv-spiral.

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