posted on Nov, 17 2007 @ 04:33 AM
reply to post by V Kaminski
I've read more than the first half of this thread, but skipped to the end to say one thing in regard to the size of the image of the moon in the
first picture linked to in the thread. The caption says that the picture was taken from 500 miles out, approximately. I believe that the image was
taken from further away, possibly more than 1000 miles out.
The reason being that I don't think the camera used had an extreme wide angle lens. From other posts I gather that the camera in question was a sort
of utility camera used to monitor the satellite itself.
The following link describes a lens that Canon says is the widest angle lens in the world:
The maximum angle of view of this lens is 101 degrees. I did a very simple experiment using post it note paper to determine that if a lens with an
angle of view of 90 degrees were to have been used in the first photo, the camera would have to be around 1000 miles from the moon to get the whole
moon in the shot.
Looking at photo 1, if you take the black sky portion of the photo and add it to the opposite side of the moon in the photo, I believe it would extend
just beyond the "circle" of the moon if it were drawn in, i.e., if the camera were pointed at the middle of the moon, the whole moon would be within
the frame. That could not be done with a typical lens and would require a wide angle of 90 degrees and a distance of about 1000 miles.
At 500 miles from the surface, a camera with a 90 degree angle of view, pointed at the "center" of the moon would not be able to see the edges. Just
my two cents worth.