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You'll see more with a blinking dot
I find the single red dot annoyingly bright, and the single dot tends to blind your night vision.
There are two ways to improve this - an array of four dots so you can see the target centred in the dots, or alternatively make the red dot blink so it is on for about 0.2s each second. The latter is an easy mod to the cheap red-dot finders, using a 555 timer and a soldering iron.
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