Precision metrology system for the Hubble Space Telescope Wide Field Camera 3 instrument | Zendy

Ronald W. Toland | Zendy

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Precision metrology system for the Hubble Space Telescope Wide Field Camera 3 instrument

Author(s) -

Ronald W. Toland

Publication year - 2003

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.502248

Subject(s) - wide field camera 3 , metrology , hubble space telescope , physics , calibration , telescope , field of view , remote sensing , optics , astronomy , geology , stars , quantum mechanics

The Wide Field Camera 3 (WFC3) instrument for the Hubble Space Telescope (HST) will replace the current Wide Field and Planetary Camera 2 (WFPC2). By providing higher throughput and sensitivity than WFPC2, and operating from the near-IR to the near-UV, WFC3 will once again bring the performance of HST above that from ground-based observatories. Crucial to the integration of the WFC3 optical bench is a pair of 2-axis cathetometers used to view targets which cannot be seen by other means when the bench is loaded into its enclosure. The setup and calibration of these cathetometers is described, along with results from a comparison of the cathetometer system with other metrology techniques.

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