If luminosity measures light given off by its source
then lunarosity measures the moonliness of any object.
I created a lunarosity counter from a silver mirror whose last reflection
was of a smiling baby and an old watch unearthed from a graveyard.
To calibrate the lunarosity counter, I pointed it
at the sun at high noon: Zero lunarosity.
I pointed it at the full moon near the shore of the Seine
where lovers used their fingers and their mouths to weave the night: