ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY
Triangulum Galaxy. Triangulum Galaxy (M33, NGC 598). North is at top. At the time, such objects were still thought to be nebulae. M33 is some 3 million light years away, in the constellation of Triangulum. This 60-minute exposure was obtained in October 1898, from the observatory in Daramona, Westmeath, Ireland. This observatory was operated by Irish astronomer William Edward Wilson (1851-1908), one of the pioneers of the new techniques of astrophotography. Published in 'Astronomical and Physical Researches' (1900).
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