Wasn't it called an astro-tracker? Locked on to several stars simultaneously (all stars are motionless relative to each other).

I had to use a Periscopic Sextant. Manually calculate the assumed position of a body Observe the true position and plot fix on chart.

I even wrote a small program to calculate positions of stars, sun, moon, and planets. It fit on my Radio Shack PS1 with 1.8k of memory. I was in High Cotton.

Wish I had a Astro-Tracker.