« on: February 02, 2012, 10:30:50 AM »
Just catching up on this, I can't comment on the detail of the image, but I have seen the moon appear that big before. Happened to me about a decade ago driving up to Maine for a Columbus Day weekend. Think it was the Harvest Moon and coming up over Rte 128... Basically the moon was bigger than 8 lanes of divided highway and was also a gorgeous deep red. Don't think it was nearly that sharp, but looks like something from another world.
Ok the moon can appear bigger, especially when it first rises in a dark sky. But it is not bigger, it's just the way your brain works. It does not change it's distance earth, or it's size, so to get a photograph of it like Peter your going to have to use a loooong lens/telescope, or crop the image. I have been out at sea, and seen people terrified by the rising moon. I recall a friend screaming "a huge sailboat is coming right at us!" Nope, just the moon dude.
I did some math one time and found that if you want to fill the frame with the moon, actually get the edges of the moon to touch the edges of the horizontal edges of frame, you'd need a 2350mm lens on FF and about 1450 on a 1.6 crop.
Actually what I was referring to is atmospheric refraction, which is what I was seeing, which is also why the moon was freakishly red.
Whether it was from high levels of CO2 or water vapor in the atmosphere at the time, the size difference I was noticing was not a mind trick / illusion, but was an optical magnification of the reflected light do to the quality of air at the horizon combined with the curvature of the earth.
So while I have personally experienced cases where the appearance of the moon was much larger, and do to magnification of the atmosphere, and not a perspective illusion, I also recall that the features were softened / blurred, and not as crystal clear and sharp as through air. This is further amplified as when the moon is coming just over the horizon, the light is passing through more atmosphere.