Thanks for the info, Paul. I'll chase the ducks off the "lawn" (field/pond) and set up for some "rare" viewing, both solar and nocturnal.
Ron
From: Paul Howell
Sent: Wednesday, July 08, 2009 4:02 PM
Subject: [southern_maine_astronomers] Unusual seeing
Well we certainly have paid a price for the stubbornly (!) persistent low-pressure system that has made its way (at a walking pace) from Ontario to us over the past month. However, there is a silver lining.
Atmospheric seeing (the wiggling of starlight that messes up detailed views of things) correlates very well with the jetstream. Typically, we in Maine are more or less directly beneath the jetstream and we have the seeing to prove it. Premier places like Arizona, southern Florida, and Hawaii typically are well away from the jetstream.
Starting tomorrow night, we get a rare treat. The dissipating low pressure system will move off into the gulf of Maine (taking its clouds with it) and block the jetstream for a day or two. For that period, we stand to get Arizona, or even sea-level Hawaii-esque seeing. I have attached two jetstream forecasts, one for the start of tomorrow night (0h UT, 7/10) and one for Friday (0h UT, 7/11).
If you have been itching to get that great view of Saturn in the early evening or Jupiter later on, this might be a good time. Of, if you are an imager, perhaps now would be a good time to try imaging that small planetary nebula at long FL!
-Paul
Thursday evening:

Friday evening: