Abstract
THERE is in use at the present moment in the Paris Observatory an instrument of a new construction, which is destmed to play a large part in the Astronomy of the future. It is not too much to say that the new instrument will play as important a part in, and will be as essential to the new Astronomy, as the transit instrument plays in the Astronomy of position.
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The Siderostat * . Nature 10, 358–359 (1874). https://doi.org/10.1038/010358a0
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DOI: https://doi.org/10.1038/010358a0