[AZ-Observing] Re: magnificent Moonbow, Thursday midnight
- From: Brian Skiff <bas@xxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Fri, 16 Dec 2005 12:08:29 -0700 (MST)
>> 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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