Just to one side lies Corona Borealis , the Northern Crown. When first visible, Hyakutake was near Arcturus, and from night to night it gradually passed between the Dippers before falling below our horizon at the end of April. The size of each star indicates its relative magnitude . Constellation names are light blue . Messier object numbers are pink .
Globular clusters are gold starbursts .
Open clusters are dotted white circles. Planetary nebula are green diamonds . Bright nebula are magenta squares . Dark nebula are grey rectangles . Green x's are x-ray sources.