A high sensitivity HI survey of the sky at $\mathsf{\delta \le -25 \degr}$

Abstract

We present the final data release of the high sensitivity λ 21-cm neutral hydrogen survey of the sky south of . A total of 50 980 positions lying on a galactic coordinate grid with points spaced by () = (05/cos b, 05) were observed with the 30-m dish of the Instituto Argentino de Radioastronomía (IAR). The angular resolution of the survey is HPBW = 05 and the velocity coverage spans the interval -450 to +400 (LSR). The velocity resolution is 1.27 and the final rms noise of the entire database is 0.07 K. The data are corrected for stray radiation and converted to brightness temperatures.