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> Name: Gloria Lee Email: lee_gloria_at_gsb.stanford.edu
> Area: Astronomy
> Subject: Why does [halo] around moon look less vivid thru binoculars?
>
> Why does the corona [sic] around the moon
> look less vivid when viewed thru binoculars?
>
> I was looking at the moon on a slightly
> foggy night, and there was a wide halo
> around the moon, somewhat rainbow
> like, presumably from the fog. But
> when I looked at the moon again
> through binoculars, the corona did not
> look nearly as bright, colorful or big.
> Why?
The phenomenon could be a corona as well a halo, the effect is
similar when looking it with binoculars. I have noticed the same.
When looking a bright and colorful sun dog with binoculars
it looks not so spectacular anymore.
The reason is something to do with optics. I guess Joe Cali
and Gary Becker have given quite good answer to this question.
-VeikkoM-
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