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zankaon
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How does Hubble Space Telescope (HST) re-orient itself; and what is an underlying mathematical description? http://en.wikipedia.org/wiki/Gyroscope"
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The Hubble re-orientation allows the telescope to point at different areas of the sky to gather new data and images. It also helps to extend the life of the telescope by allowing it to use its backup systems for certain observations.
The Hubble telescope typically re-orients every 20-30 minutes during its orbit around Earth. However, the frequency can vary depending on the specific mission and observations being conducted.
The Hubble re-orientation involves complex mathematical calculations to determine the correct angles and positions for the telescope's orientation. These calculations take into account the telescope's orbit, rotation, and desired target coordinates.
The Hubble telescope is equipped with gyroscopes and reaction wheels that work together to control its movement and orientation in space. The gyroscopes measure the telescope's rotation, while the reaction wheels use stored momentum to adjust the telescope's orientation.
The Hubble re-orientation can be a delicate and precise process, and any miscalculations or malfunctions could potentially damage the telescope. Additionally, the constant movement and re-orientation can put stress on the telescope's components and contribute to its gradual deterioration over time.