Understanding Earth's Rotation: The Effects on Telescope Observations

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The discussion highlights the challenges of observing celestial objects with a small telescope, particularly the effects of Earth's rotation on star visibility. Users report that when using a 9mm eyepiece, stars appear to move quickly out of the field of view, leading to concerns about the nature of this motion. The perceived jerky movement is attributed to either the telescope's instability in windy conditions or atmospheric turbulence affecting clarity at high magnification. Observers emphasize that while the motion may seem non-uniform, it is largely consistent with expected astronomical phenomena. Understanding these factors is crucial for improving telescope observation experiences.
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i have a little telescope of 70mm in diameter and 600mm focal length, its just good too see ...birds, but when i use the 9mm eyepiece and zoom to a star , the star's image will quickly pass to the vision field because of the rotation of the Earth. What i observed could be just an, optical illusion but it seems that the movement of the star in the image its not constant but its jerking, its like a non uniform motion , ...have any idea?
 
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It's pretty uniform!
The jerky motion is either due to movement of the telescope shaking in the wind, or at high magnification the atmospheric turbulence or 'seeing'
 

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