Which plate, specific to the observer's latitude, sits inside the mater and displays a map of the local horizon?

Answer

tympan

The tympan contains the stereographic projection mapping the horizon and altitude circles for a particular geographical location.

Which plate, specific to the observer's latitude, sits inside the mater and displays a map of the local horizon?

#Videos

How to use an astrolabe I Curator's Corner S3 Ep1 #CuratorsCorner

Historyastronomyinstrumentnavigationastrolabe