Skylore Hydrus is the Little Snake, not to be confused with Hydra , the big one. Description Hydrus has only three stars above the fourth magnitude. 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.