Which function was critically enabled by improved astronomical data for 16th century transatlantic voyages?

💡 Explanation

With access to better observational astronomical data, navigational charts could be produced using more accurate stellar positions because celestial navigation involves sighting stars for determining geographic coordinates. Therefore more consistent navigation charts became available, rather than ocean current or magnetic declination improvements, which rely on oceanography and magnetism.

• Which effect limited astrolabe accuracy calculating sunrise time during the medieval era?
• Which structural compromise allowed Roman arch bridges to span wider gaps compared to earlier stone beam bridges?
• Which soil property decreased when early Andean cultures implemented terrace farming on steep slopes?
• Which outcome reliably indicates the summer solstice when observed through a precisely aligned medieval Islamic astrolabe?
• Which optical phenomenon, understood by Alhazen in the 11th century, fundamentally enabled the design of pinhole cameras?
• Which navigational outcome occurred when medieval mariners used astrolabes to observe solar altitude during transatlantic voyages?