Goofs

Most takes show the system to consist of three bodies: the planet with the cathedral, the white sun, and the big object that eclipses the sun. The reappearance of light in the cathedral comes from the movement of the big object, and the sun remains stationary relative to the cathedral throughout the movie. Still, in two takes shadows of the cathedral columns/and or rays of lights appear to move relative to the cathedral, as if the sun moved very quickly relative to the cathedral.

Right before the eclipse ends, stars look like lines instead of point, like on a picture taken over several minutes.

When the protagonist looks at the cathedral interior, he holds the light right in front of his face. This would effectively blind him and preclude seeing the walls. He should keep the light behind or above his face.