Terms: celestial equator, celestial poles

The SC001 star map is similar to a Mercator projection of the globe. The celestial equator divides the map in half. The top half includes most of the north hemisphere, but in doesn't reach as far as the north celestial pole which is off the top of the map. (We provide you with a SC002 star map which overlaps the top of this map and goes further to include the missing northern cap.) Similarly the bottom of the map doesn't quite reach the south celestial pole (but then the region missing at the bottom can't be seen from CSB/SJU anyway).