Description Locate Canopus by drawing a line from the easternmost star of Orion 's belt down through Rigel, Orion 's left foot. Canopus lies about twice as far from Orion 's belt as Sirius. 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.