Just as a side note, I live in California -- where it is essentially impossible to see the comet without extraordinary visual aid (or see anything much at all in night sky most of the time thanks to haze, smog and light pollution) -- but on Saturday, May 21, I was at a star party in Chaco Canyon in New Mexico (site of that famous sun dagger and the supposed depiction in rock art of the 1054AD supernova/Crab Nebula) where it was possible to spy the comet without visual aid of any kind and the sight in binoculars was spectacular indeed!

Would there were dark skies on the Left Coast!

Cheers, BRFelix