After a bit of digging (Went to 617 Web site) I recieved the following info.
The aft light was just aft of the bomb bay asd was angled foreward to make a figure eight with a spot mounted vertically in the bombing camera position, the camera being useless for “Chastise”. The spots were angled out slightly to starb’d to make viewing easier.
For Pete.
The film was made at Hemswell
Dai