Calibration and alignment of metrology system for the Nuclear Spectroscopic Telescope Array mission

Carl C. Liebe; Yunjin Kim; Patrick L. Meras Jr.; William W. Craig; Michael P. Raffanti; Christopher Scholz; Ryan McLean

doi:10.1117/1.OE.51.4.043605

16 April 2012 Calibration and alignment of metrology system for the Nuclear Spectroscopic Telescope Array mission

Carl C. Liebe, Yunjin Kim, Patrick L. Meras Jr., William W. Craig, Michael P. Raffanti, Christopher Scholz, Ryan McLean

Author Affiliations +

Optical Engineering, Vol. 51, Issue 4, 043605 (April 2012). https://doi.org/10.1117/1.OE.51.4.043605

Abstract

A metrology system to measure the on-orbit movement of a ten meter mast has been built for the Nuclear Spectroscopic Telescope Array (NuSTAR) x-ray observatory. In this paper, the metrology system is described, and the performance is measured. The laser beam stability is discussed in detail. Pre-launch alignment and calibration are also described. The invisible infrared laser beams must be aligned to their corresponding detectors without deploying the telescope in Earth's gravity. Finally, a possible method for in-flight calibration of the metrology system is described.

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Carl C. Liebe, Yunjin Kim, Patrick L. Meras Jr., William W. Craig, Michael P. Raffanti, Christopher Scholz, and Ryan McLean "Calibration and alignment of metrology system for the Nuclear Spectroscopic Telescope Array mission," Optical Engineering 51(4), 043605 (16 April 2012). https://doi.org/10.1117/1.OE.51.4.043605

Published: 16 April 2012

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