Why, though, are those clouds so sharp and dark, as though they maintained their shape and position throughout much or most of the process?
Venus After Sunset (APOD 1 Feb '06)
Venus After Sunset (APOD 1 Feb '06)
Can y'all help me understand an apparent oddity? Six months, at least, of adding a new exposure every few nights, right? I can understand why the sunset light is consistent (sun was always 7 degrees below the horizon), spread by the north-south procession through the changing seasons. Venus appears as dots, so I'm guessing the exposures were under a minute each. The building lights, too, look like what I'd expect: a few very bright, as though they were on nearly every evening, and a few dimly lit (on during just a few of the exposures).
Why, though, are those clouds so sharp and dark, as though they maintained their shape and position throughout much or most of the process?
Why, though, are those clouds so sharp and dark, as though they maintained their shape and position throughout much or most of the process?
I would imagine that all the previous images of Venus in the sky were superimposed upon the final image (or one with a reasonablly clear sky) which then included the background and clouds that are visible. To that end, I would think that if the final image had clouds covering where Venus was located in a previous image that those clouds would be rubbed out of the final image or else Venus would become visible below the clouds. That or some previous reasonably clear sky image was used as the background image.