Yup , it's a tough one to grab inna pic,,,
looking into getting some for my tank,,,
thru a inside source ,and talking to those in the forefront of moonlighting,,,the best "real" lights are sold by Marc Weiss, and PFO,,,really,,,,
the Weiss line has one that can be adjusted for aiming,,and the PFO 's have one that attaches to a MH bulb socket.
i've seen in person the results of a lot of moonlights
the good ones are NOT "just a blue LED"
for maximum viewing , and polyp extension, these two seem to be the winners hands down,,,,
like a lot of us need something to make us sit and watch the tank,,,but also,the good ones are both viewing pleasurable, AND a benefit to the tank,,
you would probably not see anything with a light made just made to replicate true moonlight,,,