The NTT telescope has a 3.58 m primary mirror and a focal ratio of f/2.2. a. Calculate the focal length of the primary mirror of the NTT telescope. b. What is the value of the plate scale of the NTT? c. Bootes is a double star system whose components are separated by 2.9". Calculate the linear separation of the images on the primary mirror focal pane of the NTT.

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