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Table 1
Summary of recent large area low-frequency surveys (see also Fig. 1).
| Survey | Resolution | Noise | Frequency | Area | ||
| (″) | (mJy/beam) | (MHz) | ||||
|
|
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| GLEAM (Wayth et al. 2015) | 150 | 5 | 72–231 | δ < +25° | ||
| MSSS-HBA (Heald et al. 2015) | 120 | 10 | 119–158 | δ > 0° | ||
| MSSS-LBA (Heald et al. 2015) | 150 | 50 | 30–78 | δ > 0° | ||
| TGSS ADR (Intema et al. 2017) | 25 | 3.5 | 140–156 | δ > −53° | ||
| LoTSS direction-dependent | 5 | 0.1 | 120–168 | δ > 0° | ||
| LoTSS direction-independent (this paper) | 25 | 0.5 | 120–168 | HETDEX Spring Field | ||
| VLSSr (Lane et al. 2014) | 75 | 100 | 73–74.6 | δ > −30° | ||
Notes. We attempted to provide a fair comparison of sensitivities and resolutions, but both the sensitivity and resolution achieved varies within a given survey.
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