Among his small library in the cabin of the ship was the book containing the astronomical tables of regiomontanus; and from his study of this work he was aware that an eclipse of the moon was due on a certain date near at hand.
"Christopher Columbus, Volume 7 And The New World Of His Discovery, A Narrative"
Filson Young
This address was spun out as long as possible; but even so it was followed by an interval in which, we may be sure, Columbus anxiously eyed the serene orb of night, and doubtless prayed that regiomontanus might not have made a mistake in his calculations.
"Christopher Columbus, Volume 7 And The New World Of His Discovery, A Narrative"
Filson Young
Some of the Indians were alarmed, some of them contemptuous; but it was pretty clearly realised on both sides that matters between them had come to a head; and probably if regiomontanus, who had worked out these tables of figures and calculations so many years ago in his German home, had done his work carelessly or made a mistake, Columbus and his followers would have been massacred on the spot.
"Christopher Columbus, Volume 7 And The New World Of His Discovery, A Narrative"
Filson Young