Chandra X-Ray Observatory
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Last modified: 13 March 2017


While observing a source, Chandra does not maintain a fixed pointing direction, but instead dithers in a Lissajous figure. Irrational periods are used in Y and Z directions to make a non-closed Lissajous pattern.

The dither why topic has details of the Chandra dither pattern.

Last modified: 13 March 2017
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