Challenge #4 – M45, the Pleiades in Taurus
Target Type R. A. Dec. Constellation Magnitude Size M45 Open Cluster 03h 47m 00s +24° 07′ 00″ Taurus +1.50 120 arcmin Overview Pierre Mechain discovered this wonderful galaxy in 1767. Messier included it in his observation notes but didn’t add it to his catalog. That was done by Camille Flammarion who discovered Messier’s list of …