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April 2, 2017

COSTAR (Corrective Optics Space Telescope Axial Replacement) – Hubble’s invaluable ‘glasses’ – is being installed on the Hubble Space Telescope. COSTAR is not really a science instrument; it is a corrective optics package that displaced the High Speed Phot

COSTAR

Astronaut Kathryn C. Thornton lifts the Corrective Optics Space Telescope Axial Replacement (COSTAR) prior to its installation on the Hubble Space Telescope (HST).

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