>> My wife noticed something odd.  The nearly-full moon was about 30
>> degrees above the horizon.  There was a notable glow on the horizon,
>> except under the moon.  The moon seemed to be in a column of darkness
>> that was about three times the apparent width of the moon.  We could see
>> the column over its entire length as a strip of sky darker than the sky
>> Any of you ever see this?  Do you have any idea what could have caused
>> it?  I suspect it's due to some pecularity of the visual system, but
> I'm surprised to not find this phenomenon in Corlis. I could have sworn I
> saw it there. He does have the somewhat similar dark sky between a rainbow
> and a secondary bow. I personally have seen a rainbow enclosing a
> I know I've read about pillars under the Sun and Moon elsewhere,
> but I can't recall if they were reportedly dark or bright. I do know
> these sorts of things are supposed to be quirks of optics not of the
> visual system. I'm sorry I haven't got any answers, but a search
> through some books on atmospheric optics ought to turn a few hints up.
interesting observational stuff from the prior millenium including pix
more pix, many of which flip to negative to highlight details (hover cursor)

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