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Title:
The Rhodes/HartRAO 2326-MHz radio continuum survey
Authors:
Jonas, Justin L.; Baart, Eddie E.; Nicolson, George D.
Affiliation:
AA(Department of Physics & Electronics, Rhodes University, Grahamstown 6140, South Africa), AB(Department of Physics & Electronics, Rhodes University, Grahamstown 6140, South Africa), AC(Hartebeesthoek Radio Astronomy Observatory, PO Box 443, Krugersdorp 1740, South Africa)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 297, Issue 4, pp. 977-989. (MNRAS Homepage)
Publication Date:
07/1998
Origin:
MNRAS
MNRAS Keywords:
SURVEYS, SUPERNOVA REMNANTS, GALAXY: STRUCTURE, RADIO CONTINUUM: GENERAL, RADIO CONTINUUM: ISM
DOI:
10.1046/j.1365-8711.1998.01367.x
Bibliographic Code:
1998MNRAS.297..977J

Abstract

We have made scanning observations with the HartRAO 26-m radio telescope to obtain a pencil-beam map of 67 per cent of the sky at 2326 MHz. This is the highest resolution and highest frequency radio continuum map of this type made of such a large area of sky. In this paper we describe the observations and data reduction procedures used to produce the survey. The resulting map has an angular resolution (HPBW) of 20 arcmin, and the rms pointing accuracy is 1.2 arcmin. The rms noise fluctuations are less than 30-mK T_FB over the whole map. We estimate that the uncertainty in the temperature scale is less than 5 per cent, and that the error in the absolute zero level is better than 80-mK T_FB in any direction. High-contrast half-tone images of the data with a model of the diffuse galactic background subtracted are presented. These images show many complex emission structures up to and beyond 50 deg latitude, and illustrate the quality of the data. Extracts from the survey data are available via FTP by arrangement with the authors.

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