Ptolemy would have made his observations in Egypt probably Alexandria around AD120 up to his death in AD168.
Im thinkin that it was made when he decided to look up at the sky one night and decided he would make an astronomical observation. idk just that's how i would make an oservation of the sky. [Rosco P. Coltrain]
Ptolemy
he studied at barnes and noble
late 1500's
Robert R. Newton has written: 'Ancient astronomical observations and the accelerations of the earth and moon' -- subject(s): Acceleration (Mechanics), Ancient Astronomy, Eclipses 'The Origins of Ptolemy's Astronomical Parameters (Technical Publication / Center for Archaeoastronomy)' 'The moon's acceleration and its physical origins' -- subject(s): Acceleration (Mechanics), Moon, Observations, Origin
ptolemy
The sumerians
No, Ptolemy did.
Astronomical observations.
An observatory.
The astronomical canon was a compilation of mathematical tables and astronomical data used for making astronomical calculations and observations. It helped astronomers accurately predict the positions of celestial bodies in the sky.