Gudebuddha
10-12-2023

I used this map Observation Record of Saturn to grind the thesis. From Amsterdam Archive, R7 Recognition/Astronomy in Gulf of Guinea. Reported the discovery in Saint-Georges at Nzinga Nkuwa, not an astro disc NPC, so i didn't got the full reward, but it was fast, took me overall 74 minutes for the needed 32 maps.

Only req for the map is this Quest: A Planet with Ears

V_I
10-23-2023

This map is another option:

Astronomer's Observation Record

It requires r12 Astronomy instead of r7 and goes to East Asia, but you'd get more proficiency from it and its only prequest is The Giant of the Southern Sky