The Southern Twenty-centimetre All-sky Polarization Survey (STAPS): Survey description and maps

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Table 1

Parameters of STAPS.

Frequency range (observed, MHz)	1300–1800
Frequency range (usable, MHz) ^(a)	1324–1471, 1482–1492
	1506–1524, 1609–1617
	1627–1682, 1693–1770
Channel width (MHz)	1
Number of good channels	301
Sky coverage	−89° < Dec < 0°
Angular resolution (observed) ^(b)	19′.6–18′.1 (RA)
	16′.5–13′.8 (Dec)
Angular resolution (smoothed)	20′
Flux density to brightness temperature ^(c)	0.346–0.186 KJy⁻¹
On-axis polarization leakage	<0.8%
Flux density calibration accuracy	10%
RMS sensitivity per channel ^(d)	16–8 mK for I
	8–5 mK for Q and U
Intensity calibration	Relative for I
	Absolute for Q and U

Notes. ^(a)Only frequency gaps larger than 5 MHz are listed. ^(b)Based on the beams built from PKS 1934–638. The beam slightly varies with declination. ^(c)At 20′ resolution. ^(d)Measured at declination of around −20° from the maps smoothed to 20′.

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