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2. Beals, G.A., Crum, R.C., Dougherty, H.J., Hegel, D.K., Kelley, J.L., and Rodden, J. J. “Hubble Space Telescope Precision Pointing Control System,” AIAA Journal of Guidance, Control, and Dynamics, Vol. 11, No. 2, March–April 1988, pp. 119–123.
3. Eaton, D. J., Whittlesey, R.A., Allen, B.W., Stoll, R., Abramowicz-Reed, L., and Marcel, M. “On-Orbit Performance of the Hubble Space Telescope Fine Guidance Sensors,” Applied Optics, Vol. 32, No. 10, 1993, p. 1689ff.
4. Sharkey, J.P., Nurre, G. S., Beals, G. A., And Nelson, J. D. “A Chronology of the On-Orbit Pointing Control System Changes on the Hubble Space Telescope and Associated Pointing Improvements,” presented as paper AIAA-1992-4618 at the 1992 AIAA Guidance, Navigation, and Control Conference, Hilton Head, SC, August 10–12, 1992; 1992 AIAA Technical Papers, Part 3 (A92-55151 23-63), pp. 1418–1433.
5. Vadlamudi, N., Blair, M.A., and Clapp, B.R. “Hubble Space Telescope On-Orbit Transfer Function Test,” presented as paper AIAA-1992-4614 at the 1992 AIAA Guidance, Navigation, and Control Conference, Hilton Head, SC, August 10–12, 1992; 1992 AIAA Technical Papers, Part 3 (A92-55151 23-63), pp. 1409–1417.