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Unusual seeing   Message List  
Reply | Forward Message #1085 of 1229 |
Re: [southern_maine_astronomers] Unusual seeing

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

Sent: Wednesday, July 08, 2009 4:02 PM
Subject: [southern_maine_astronomers] Unusual seeing

Hi Everyone - 

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:

 


Thu Jul 9, 2009 12:55 pm

astronomyron
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Message #1085 of 1229 |
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Hi Everyone - 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...
Paul Howell
paulthecaveman
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Jul 8, 2009
8:02 pm

Sounds great Paul, I am going to dust off the scope and give it a try. I will probably have to read the directions on how to operate it since nit has been so...
FIS85@...
jumpstart55a
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Jul 8, 2009
8:08 pm

Hell all I am also looking forward to some clearing. As soon as I finished the observatory roll off roof the rains started and it rained and it rained. I was...
Ed Garrison
edg154
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Jul 8, 2009
10:08 pm

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...
Ron T
astronomyron
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Jul 9, 2009
1:01 pm

I finally made it out and got some viewing in. I have to say it was fantastic for a change. No turbulence and clarity was unbelievable. Thanks for the heads...
FIS85@...
jumpstart55a
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Jul 10, 2009
4:05 pm

It was fantastic! George and I were imaging all night and often saw finished images with stars at or below 2 arc-seconds! that is at least twice as good as we...
Paul Howell
paulthecaveman
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Jul 10, 2009
6:53 pm
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