Step 6: How to Use the Nocturnal Celestial Stardial
1.) Find one of the 3 reference constellations, the larger reference star of it in particular.
2.) Align the appropriate constellation dial (Dial B) to the day's date.
3.) Hold instrument in a vertical position whilst facing north.
4.) Sight Polaris, the North Star, through the hole in the center of the instrument.
5.) Rotate the long arm (Dial A) to point to the reference constellation.
6.) The time units on Dial B are in 5-minute increments. The flat edge of Dial B will show the time increment to the nearest 5 minutes.
Note: for greater accuracy one could point directly to specific stars within the chosen constellation:
ï· Schedar within Cassiopeia
ï· Kochab within Ursa Minor (the Little Dipper)
ï· The Pointers within Ursa Major (the Big Dipper)