Abstract
I AM told that, in referring to the observations on the late transit of Venus which were made from a station on our college grounds by the astronomers of the German Imperial Commission, you speak of them as using the photographic process. This is not correct; besides contact observations they restricted themselves to the use of the heliometer. The first and the second contacts were not seen by reason of clouds; but four half sets and six full sets of heliometric measurements were made—128 in all. The third and the fourth contacts were observed by the German astronomers and by myself.
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HART, S. The Late Transit of Venus. Nature 27, 483 (1883). https://doi.org/10.1038/027483b0
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DOI: https://doi.org/10.1038/027483b0
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