P3D Moon Size

[koganlee@xxxxxxxxxxxxx]

>Besides, there is a very real size difference between a horizon moon and
>the elevated moon. The so called illusion may exist too, but it's not
>the only factor by a long ways. Over many years of watching the full
>moon rise above the horizon, I have watched the apparent size of the
>moon change while there is still reference landscape easily within view. 
>

Larry,

It's one thing to look at the moon and sense its apparent size. It is another to actually measure the moon as it rises. I have made several 
images (they happen to be stereo, but it makes no difference) of the moon at 5 minute intervals as it rises from the horizon. The size of the 
moon is certainly no bigger at the horizon than it is higher in the sky. (On the film it actually looks ever so slightly bigger as it gets 
further from the horizon, but that is because objects appear slightly larger as they move off the center of the lens axis. To do a 
really accurate test, one would have to re-center the moon and shoot it on subsequent frames.) I'll be happy to send one of these images to 
anyone who would like to see for themselves.

David Lee