just had my first 520nm experience
handheld unit 100mW , very very interesting , last time i felt like this
was when i first connected an FB3 after using alphalite :-)
just something really satisfying and stable and piercing about the
colour , divergence pretty good although the dot is pretty huge even
at apeture
looking forward to seeing either of the robs comparisions to 532nm
in due course :-)
Overall pretty happy , next to stick it in the feezer and see how
it likes the cold