Tereographic 'polar' map, except from 90e to 90w with 0n 180e at center

Stereographic ‘polar’ map, except from 90e to 90w with 0n 180e at center.
Does not like longitude from -90 to 90.

Never mind.
I blundered, I figured it out.
Enter center 0n,-90w with a radius of 90.