Update: In fact our first attempt this lunchtime seems to have worked - I simply masked off some of the infra-red LEDs which might have been flaring back off the body of the camera mounting - just look at the improved picture. Why didn't we think to try this before, I ask myself?? This is a temporary fix, and we'll be doing more work over the next week of so, and maybe even see if we can get a new spherical camera to fit into the existing housing. Thanks to Steve from local firm, Acam Technology, who donated this especially small vari-focal lens camera to the project last year, and who made suggestions as to how we might resolve the problem. Any replacement camera would need a total height of less than 10cm in order to fit through the cathedral's ancient guttering - and is proving quite hard to find.
Derby Museum and Art Gallery