DEEP-SKY TOUR
1 M51
ur first target is M51, the Whirlpool Galaxy, a bright spiral galaxy located close to Alkaid (Eta (ε) Ursae Majoris) at the end of the Plough’s handle. The best way to locate it is to find mag. +1.8 Alkaid (Eta (η) Ursae Majoris) and mag. +4.7 24 Canum Venaticorum as two vertices of a squat isosceles triangle with M51 located at the remaining vertice. There are two tidally
