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Fig. 9.

image

Combined dirty images of the raw (left), model (center), and residual (right) using Band 3 and Band 4 ACA interferometric data. We note that no primary beam correction is applied to the images. We note that the signal is heavily attenuated by antenna pattern as one moves to the edges of the field of view. Hence, despite the noise appears roughly uniform across the entire map, the signal-to-noise ratio decreases abruptly away from the image center.

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