Aiming high

This evening I caused a few curious looks on our road as I adjusted the optics on my latest 481THz beacon in the dark.  In order to carefully align the powerful red beam, it is important to ensure the cross hairs on the gun sight telescope used for aiming are precisely aligned with the tightly focused red beam.  I beamed onto the rear of a distant car and made some adjustments. As I was doing this, someone walked down the road with a dog and stood, puzzled, at why this car number plate was glowing red very brightly!  The beam was aiming slightly too high, but after adjustment is now precisely in the centre of the cross hairs, so next week, weather permitting, it will be time to try again at the NLOS test.