I've been trying to capture rotation of stars around the celestial north pole. I expected the stars to orbit around something close to Polaris - as the earth rotates. But I found a surprise.
|Early morning sky - overlay of 250 images revealing the apparent star trajectories around the celestial north pole|
|Early morning sky (single frame)|
|Night Sky (requires imagination) with Polaris and Kochab labelled|
|While other stars are rotating aound some axis, the Polaris trajectory is flat. its flat because its only a small sector of the orbit and consequently appears as a line.|