I recall I little gathering of astroimaging friends at my home under dark skies near Braidwood a while back.
One of our mates looked above the house's roof line with worry in his eyes.
I asked why and he indicated he feared the fireplaces in the house might be producing some smoke that would interfere with the images....
you guessed it...LMC and SMC..
we all had a great laugh!
frank
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