From my one visit to the All-Arizona site, and knowing what it must be like at 5MM, the Lowell Star Party site, which is not far from the USNO-Flagstaff hill, would be comparable to a nice night at the All-AZ ranch site, but not as dark as 5MM. The sky quality in terms of contrastiness of the Milky Way etc will depend a lot on the amount of local low-level aerosols. If it's dry and clear (which is roughly the weather forecast), then it'll be pretty nice but not perfect. I can also predict with some confidence that it will be noticeably darker after midnight due to the reduction in traffic in town. \Brian -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.