THE APPROACHING ECLIPSE | Nature


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ABSTRACT THE accompanying illustration from _La Nature_ shows the instruments to be used at the total eclipse of May 6, by M. Janssen, who has command of the French expedition. The


illustration is after a photograph taken at M. Janssen's Observatory at Meudon. The French expedition, which has probably reached its destination, will be loDated on Sable Island, near


Caroline Island, in the Marquesas Archipelago. Before quitting Paris, M. Janssen had all his instruments and tents erected in order to see that all worked well. The frame surrounding the


apparatus is arranged to receive a large awning to protect them. The tent on the right is intended for the astronomers, the furniture consisting of a work-table, several camp-stools, and


three beds. The little tent on the left is for photography. The instruments of the French expedition comprise—I. A telescope of short focus for spectroscopic work. 2. An equatorial on which


will be arranged a photographic apparatus, containing five cameras which act together. The plates are om.40 by om.50; they will require an exposure of five minutes. This apparatus is


intended for intra-Mercurial planets. 3. A telescope of 6 inches, with a lens of 3 inches, with photographic apparatus acting by means of three cameras at once. This apparatus is intended


for the solar corona. 4. A fourth telescope, specially reserved for M. Trouvelot for drawings of the corona and search for intra-Mercurial planets. Access through your institution Buy or


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permissions ABOUT THIS ARTICLE CITE THIS ARTICLE _THE APPROACHING ECLIPSE_ . _Nature_ 27, 556 (1883). https://doi.org/10.1038/027556a0 Download citation * Issue Date: 12 April 1883 * DOI:


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