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

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.

Jeff


At 10:14 -0700 12/16/05, Tom Polakis wrote:
>Nah, dust and smoke does not refract light.  There have to be ice 
>crystals present to create haloes, and they are far above the 
>Phoenix smog.
>
>If anything, the persistent smog blanket has been dimming the 
>magnificence of haloes, which have been appearing around the sun and 
>moon a lot in the past few days.
>
>Tom
>
>>  From: Stan Gorodenski <stan_gorodenski@xxxxxxxxxxxxx>
>>  Date: 2005/12/16 Fri PM 01:03:33 EST
>>  To: az-observing@xxxxxxxxxxxxx
>>  Subject: [AZ-Observing] Re: magnificent Moonbow, Thursday midnight
>>
>>  Could this be a pollution ring from the heavy pollution in the Valley?
>>  It might not be directly from the pollution, but maybe the pollution is
>>  enhancing a naturally occurring ring. If so, how lucky you all are to be
>>  living in such a heavily polluted area. :-)
>>  Stan
>>
>>  Steve Coe wrote:
>>
>>  >Howdy all;
>>  >
>>  >If it is late Thursday and you are checking email now and you have the
>>  >chance, step outside.  There is a terrific "Ring around the Moon" 
>>right now.
>>  >
>>  >It actually has faint color, pink on the inside and blue on the outside.
>>  >Betelgeuse just inside the southern rim and Capella is at the 
>>northern edge.
>>  >
>>  >This is equal to the best I have ever seen, don't miss it.
>>  >>> >Clear Skies to us all;
>>  >
>>  >Steve Coe

-- 
Jeff Hopkins
HPO SOFT
http://www.hposoft.com/Astro/astro.html
Hopkins Phoenix Observatory
7812 West Clayton Drive
  Phoenix, Arizona 85033-2439 U.S.A.
www.hposoft.com
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