Brian Skiff wrote: >With consecutive clear night number 14 underway in Flagstaff, >and several more doubtless still to come, I'm wondering if folks want >to have a casual bet on when the last clear night will be... I'll bet a six-pack of Arrogant Bastard Ale that the first 'partial' night occurs on June 25 +/- one day. By the way, this morning the north half of the sky sky over Phoenix had an almost imperceptibly thin layer of something over it. I could only see it with polarizing sunglasses rotated 90 degrees (try that while you're driving). Try as I might, I couldn't tell if it was altocumulus or smoke. The relative humidity was 3% and Phoenix was black in the water vapor image, so I'm guessing smoke. Tom --- Tom Polakis Tempe, AZ Arizona Sky Pages http://www.psiaz.com/polakis/ -- This message is from the AZ-Observing mailing list. See this message's header if you want info about unsubscribing or the list's archive. This is a discussion list. Please send personal inquiries directly to the message author. In other words, do not use "reply" for personal messages. Thanks.