[AZ-Observing] Re: magnificent Moonbow, Thursday midnight

Hi....Is your Dad's name Sheldon Skiff by any chance?
Janis Schoenfeld

Brian Skiff wrote:

>>> Don't be so quick to discount dust, smoke and other pollution from 
>>> affecting what we see. There are other effects at work too, e,g,
>>> diffraction and interference.
>>>      
>>>
>
>     The 22-deg halo that Steve noted arises only from hexagonal ice
>crystals.  The local low-level crud is both too small (mainly) and
>also irregularly shaped.
>
>\Brian
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>  
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