Bullialdus

A prominent crater on Mare Nubium featuring excellent terracing and twin central peaks.

Visual Description

Bullialdus appeared as a well-defined, prominent crater on the dark Mare Nubium. The crater showed beautiful terraced walls rising sharply from the mare floor. The floor contained a distinctive twin-peaked central mountain. The contrast between the bright crater and dark mare surface made it easily identifiable.

Notable Features

• Excellent terraced walls
• Distinctive twin central peaks
• Located on Mare Nubium
• Well-preserved crater structure
• Bright appearance contrasting with dark mare

Notes

• Named after French astronomer Ismaël Boulliau
• Best observed 9-11 days after new moon
• Classic example of a complex crater
• Coordinates: 20.7°S, 22.2°W
• The twin peaks are distinctive telescopic features