[Aavso-photometry] how cloudy is to cloudy??

[RBissinger at aol.com]

Looking at your light curve will tell, especially your comp vs. check star.  If all your lightcurves are smooth with no jumps you're probably OK, but if the curves bounce around alot your data won't be much good.

I've found that even thin high cirrus can have effects on photometry, depending on the precision level.  If I'm looking for a 0.1 mag drop thin clouds won't affect the data much, but if the drop is 0.01 or less they might.

In a message dated 10/21/2004 4:12:47 PM Eastern Daylight Time, <mlfleenor at charter.net> writes:

>Being new at this I am tempted to shoot even with thick cirrus clouds and "sucker-holes" should they open up later on. Right now its clouds and the forecast says partly cloudy with fog for the a.m. 
>
>I have read that differential photometry is well suited for less than perfect skies but I am curious how cloudy is too cloudy??
>
>Thanks,
>
>Mike
>
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