I’ll make it simple, I’ve been seeing a lot of videos where a person sets their camera on its side and it captures the earth rotating. shouldn’t this be impossible with the way we are on the earth?
In: Planetary Science
do you mean videos like this? https://www.youtube.com/watch?v=5No5Z-H2pRI
The camera is either on a rotating setup programmed to rotate so that the stars dont move, or the footage is post processed to rotate so that the stars dont move.
If you set a camera on a stationary mount and record the horizon and the sky for 24 hours, it will look like the sky is revolving around the camera and the horizon from one Sunrise to the next Sunrise.
If, however, you set the camera on a rotating mount that moves at the same speed as the Earth’s rotation (in the opposite direction), it will look like the sky is staying in the same place, and the Earth is the one that’s moving, which is actually what’s happening.
Not impossible at all.
Videos can be edited to visualise things like that.
Or the camera can be set on a dolly, a slowly moving mount, that rotates with the speed of the earth.
The videos are captured with a camera on [equatorial mount for telescope.](https://en.wikipedia.org/wiki/Equatorial_mount) The mount has a clock drive to keep the scope pointed at a single spot in the sky regardless of the earth’s rotation.
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