When Corvis told Apollo that she was unfaithful, Apollo turned his feathers black. On the back of Hydra , kite-shaped pattern, low in the south. 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.