Saratoga Springs (formerly, Bachelor[2] and Pierson Springs[2]) is an unincorporated community in Lake County, California.[1] It is located 4 miles (6.4 km) west of Upper Lake,[2] at an elevation of 1427 feet (435 m).[1]
A sextant is a doubly reflecting navigation instrument used to measure the angle between any two visible objects.
In the past, I believe the navigator on sailing ships (wooden ships, tall ships) had to use an instrument called a sextant that was pointed directly at the sun to find the ship's latitude or longitude, I'm not sure which, and after many times of looking into the sun the retina became cooked and the navigator lost his eye.