Status and optical performance of the corrective optics space telescope axial replacement (COSTAR)

George F. Hartig; James H. Crocker; Holland C. Ford

doi:10.1117/12.158768

1 November 1993 Status and optical performance of the corrective optics space telescope axial replacement (COSTAR)

George F. Hartig, James H. Crocker, Holland C. Ford

Proceedings Volume 1945, Space Astronomical Telescopes and Instruments II; (1993) https://doi.org/10.1117/12.158768
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

The Corrective Optics Space Telescope Axial Replacement (COSTAR) is designed to restore the high image quality, lost to a primary mirror manufacturing defect, that was originally expected from the Hubble Space Telescope (HST). Though its rapid development is both a technical and programmatic challenge, COSTAR is nearing completion at Ball Aerospace and is scheduled for deployment during the first HST servicing shuttle mission late this year. This paper describes the extensive optical testing that has been planned to assure the high quality imaging performance of the COSTAR-corrected HST. Independent, redundant tests at both component and system levels are employed to verify that design tolerances are sufficient and manufacturing tolerances are achieved. We report the results of the critical tests which have been completed to date and their implications for the on-orbit performance.

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George F. Hartig, James H. Crocker, and Holland C. Ford "Status and optical performance of the corrective optics space telescope axial replacement (COSTAR)", Proc. SPIE 1945, Space Astronomical Telescopes and Instruments II, (1 November 1993); https://doi.org/10.1117/12.158768

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