THE illustrious Argelander was accustomed to say in the quaint form of speech which he often employed, “The attainable is often not attained if the range of inquiry is extended too far.” In no undertaking is there greater need of a judicious application of this sound maxim than in the systematic determination of the exact positions of all the stars in the visible heavens which fall within the reach of telescopes of moderate power.
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The German Survey of the Northern Heavens 1 . Nature 28, 471–477 (1883). https://doi.org/10.1038/028471b0