forty-two wrote:
It's been well reported that this particular venue is very very dusty. The dust in the atmosphere would probably be enough to make an image like that?
I don't know for sure that’s why I am asking.
Fog alone can be enough to make a laser beam visible.
The laser beam is very tinny(so not many particles to reflect it) but the parts behind it are still very clear even as we can expect the picture got shot from a far distance outside of the pits. There is nothing like dust or high air density visible.
The reason why the string looks so blurry is because it is oscillating.