There is no distinction between the equator and the ecliptic.
The centre of the circle in the constellation of Draco is the pole of the ecliptic.
This region lies in the constellation Draco, at the pole of the ecliptic.
We shall, for simplicity, refer only to a star at the pole of the ecliptic.
That part of the ecliptic whence the sun descends southward.
The angle which ...