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Transcribed Image Text:One of the instruments on board the Unreal X-ray Observatory (UXO)
has a detector with 3600 pixels x 1800 pixels and a field of view of 30 ar-
cmin x 15 arcmin. If each pixel is 24 µm x 24 μm in size, calculate the
plate scale, in arcsec mm-¹, and hence determine the focal length of the
UXO telescope.
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