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Browsing Natural and Agricultural Sciences by Supervisor "De Witt, Aletha"

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Determination of Hartebeesthoek Radio Astronomy Observatory (HartRAO) VLBI antenna parameters and local tie for improved global reference frames

Nickola, Marisa (University of Pretoria, 2022)

Astrometric and geodetic Very Long Baseline Interferometry (VLBI) at the Hartebeesthoek Radio Astronomy Observatory (HartRAO) contribute to the realisation of the International Celestial Reference Frame (ICRF) and determination ...
New calibration sources for very long baseline interferometry at 1.6 GHz

Hailemariam, Mekuanint Kifle (University of Pretoria, 2016)

I present new 1.6 GHz VLBI observations of sample of 43 radio sources in the Southern celestial Hemisphere. My goals were firstly to establish the suitability of the 43 sources as calibrators for 1.6 GHz VLBI observations, ...

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