Abstract

Through the presence of two 1874 American transit of Venus stations, Tasmania played a key role in determining a value for the astronomical unit. But what makes these two stations even more important is that to this day they preserve relics associated with these historic observations. In this paper we summarise the surviving evidence found at Barrack Square in Hobart, and then revisit the Campbell Town site and provide a new inter-pretation of the field evidence preserved there. This is a revision of the problematic interpretation that was presented in Orchiston and Buchanan (2004), and is based upon more recent investigations.

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