[AZ-Observing] Re: Mizar as spectroscopic binary

     Once a long time ago while showing visitors Mizar through
the Lowell Clark, there was a guy who insisted that the view of
Mizar AB was simply a slightly magnified view of Mizar + Alcor.
No amount of explaining that the telescopic view was of just 
the one naked-eye component convinced him.

     The comment, by the way, that the sky over the weekend was
clear but very light-polluted was almost certainly caused by
the second round of Asian dust we've been having since late last
week.  Saturday and Sunday nights near Flagstaff were the worst;
the sky from Anderson Mesa was awful:  hardly any Milky Way, 
stuff greatly obscured around the horizon, the Moon looking just dim.
It's obviously present in southern Arizona, too, as one can see
from the KPNO webcams:

http://www.noao.edu/kpno/kpcam/

...if you look at this before it's too long past sunset.  The KPNO
view is somewhat compromised by a brush fire burning just south
of the mountain over the weekend.  However, the strong uniformity
of the lower-level crud shows it is well-mixed and comes from 
a long ways away.


\Brian
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