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28a. Comparison of a detail of Taurus in John Bevis, Uranographia, 1750 (left), and Johann Bayer, Uranometria, 1603 (right)

Both the similarities and the differences between the Bevis and Bayer atlases are apparent in these two details from the constellation Taurus. Bevis adopted the basic figure from Bayer, but he made the star magnitude symbols much less intrusive, and he also added a considerable number of stars that he drew from Flamsteed's catalogue and other sources. He also added a number of nebulous objects; if you look carefully just above the Bull's lower horn tip in the Bevis image at left, you can see the first depiction ever of M1, the Crab Nebula, which was discovered by Bevis in 1731.