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    Safety Goggles for looking at the beam? (Not the dot or dot reflection)

    All the safety information I've found, refers to looking directly at the laser beam dot, shone on an object or reflected back at you. At what point in mW (for 445nm), are safety glasses required (if at all) when looking at the beam in the night sky? I have a 1.6W 445nm laser on the way and am...