Page 627 - 89 history of astronomy_opt

in the Southern hemisphere, was comple-
mentary. Then Piazzi, Lalande, Groom-
bridge, and Bessel were followed by Arge-
lander with his 324,000 stars, Rumker’s Para-
matta catalogue of the southern hemisphere,
and the frequent catalogues of national ob-
servatories. Later the Astronomische Gesellschaft
started their great catalogue, the combined
work of many observatories. Other south-
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