The LOFAR Two-metre Sky Survey - I. Survey description and preliminary data release

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Table 2

Summary of the LoTSS survey properties.

Number of pointings	3170
Separation of pointings	2.58°
Integration time	8 h
Frequency range	120–168 MHz
Array configuration	hba_dual_inner
Angular resolution	~5″
Sensitivity	~100 μJy/beam
Time resolution	1 s^*
Frequency resolution	12.2 kHz^*

Notes. The sensitivity and noise estimates are appropriate for most observations but the sensitivity may be reduced at low declination (see Sect. 2.3).

^(*)

Majority of the earliest ~ 100 observations were averaged to 2 s and 24.4 kHz due to the large data rates.

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