Night sky Observation (Observation of Messier object, Planetary Bodies etc.), Telescope Designing and usage, More information on movement and position of Celestial object, Tours to various Astronomical observatory
Machholz is also considered to be one of the inventors of the Messier marathon, which is a race to observe all the Messier objects in a single night.
The first such addition came from Nicolas Camille Flammarion in 1921, who added Messier 104 after finding Messier’s side note in his 1781 edition exemplar of the catalogue.
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Messier lived and did his astronomical work at the Hôtel de Cluny (now the Musée national du Moyen Âge), in France.
M45 is named after the Messier catalog number of the constellation commonly known as the Pleiades.
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