[AZ-Observing] Re: Seeing Conditions During Monsoon

Something similar to what Derrick suggests was done on the evening of July 
2, 1989.  Six observers, myself and Steve Coe included, lined up at the same 
site to watch Saturn occult the star 28 Sagittarii.  We watched this event 
for about one hour and each described the view - out loud for all to hear. 
We were set up in a line about 15' to 20' apart.  One of the important 
reports turned out that the seeing effects came and went independent of 
telescope observer.  That is, while one observer reported seeing so bad 
Cassini's Division wasn't visible.  At the same instant another observer saw 
the rings crystal clear.

What we decided was that the cells of warmer air, causing the turbulence, 
were much smaller than realized.  Perhaps as small as a foot.

Clear skies,
aj



----- Original Message ----- 
From: "Derrick Lim" <antaresv@xxxxxxxxx>
To: <az-observing@xxxxxxxxxxxxx>
Sent: Monday, July 23, 2007 9:51 PM
Subject: [AZ-Observing] Re: Seeing Conditions During Monsoon


<snippet>

A wild idea: It would be an interesting project to have people from
different points in the Phoenix metro area record the seeing conditions
together with weather/geographical conditions (wind speed/direction,
temperature, humidity, surrounding buildings, elevation...etc.) and put this
data together for a few nights during this monsoon season (and maybe even
other times of the year) and see how the good and bad seeing conditions are
distributed throughout the valley. Have this ever been done before?

Derrick

<snippet> 

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