The world's largest neutrino telescope – made from a giant cube of ice at the South Pole

“You could consider this one to have a 360 degree angle of view, omnidirectional I guess.”

OK. Still not clear how they get a “picture” of the sources. How do they infer the direction that each neutrino that interacts with the ice cube is coming from? In other words, how do they “focus” the beam. Any telescope requires a “focus” mechanism, otherwise all you get is a blob. A pinhole camera relies on the small size of the hole as a collimator, i.e. focus mechanism, but how do you collimate a neutrino beam when they go through everything.

I did a bit of searching and found this....

http://www.physicsforums.com/archive/index.php/t-39271.html

It touches on my question but doesn’t really answer it.

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