ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Thirty-three blue photographic plates from the Harvard archives, taken between 1921 and 1955 (27 between 1948 and 1955), were measured with a Cuffey Iris Astrophotometer. Relative magnitudes were derived from a reference sequence around the object, which was obtained by a transfer from Mount Wilson ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/252365a0
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