Abstract
THE volume of the annals of the Harvard Observatory just issued is one of great importance to astronomical science, as the new director, Prof. Pickering, has included in it the photometric observations which have lately been carried on with so much vigour. The first chapter is devoted to a description of the forms of instruments—many of them new—which have been employed, and in this notice we shall limit ourselves to an analysis of this part of the volume.
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Celestial Photometry . Nature 21, 23–26 (1879). https://doi.org/10.1038/021023a0
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DOI: https://doi.org/10.1038/021023a0