NujoudEarth! This is from Orion's Optical Navigation Camera on Flight Day (FD) 2! These cameras are being calibrated on this flight for future missions to be able to safely return the crew without any ground communication! 1/2
Optical Navigation works by measuring the Earth or Moon diameter and limb (sunlight/darkness interface) to calculate how far and where Orion is relative to the body. Typical state (position) navigation is calculated by the radiometrics of the ground DSN signals. 2/2