Mr. Paul J. Keas Profile

Paul J. Keas

at Moog CSA Engineering

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 4 August 2014 Paper

Error reduction and modeling for hexapod positioners of secondary mirrors for large ground-based telescopes

Ryan Sneed, Paul Keas

Proceedings Volume 9150, 915020 (2014) https://doi.org/10.1117/12.2056644

KEYWORDS: Actuators, Sensors, Systems modeling, Performance modeling, Mirrors, Telescopes, Computer programming, Error analysis, Lead, Model-based design

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Proceedings Article | 22 July 2014 Paper

Implementation of an active vibration damping system for the SOFIA telescope assembly

Paul Janzen, Paul Keas

Proceedings Volume 9145, 91452N (2014) https://doi.org/10.1117/12.2056861

KEYWORDS: Telescopes, Actuators, Control systems, Amplifiers, Space telescopes, Observatories, Control systems design, Operating systems, Analog electronics, Human-machine interfaces

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Proceedings Article | 27 September 2012 Paper

Active damping of the SOFIA Telescope assembly

Paul Keas, Edward Dunham, Ulrich Lampater, Enrico Pfüller, Stefan Teufel, Hans-Peter Roeser, Manuel Wiedemann, Jürgen Wolf

Proceedings Volume 8444, 844411 (2012) https://doi.org/10.1117/12.924791

KEYWORDS: Control systems, Telescopes, Actuators, Mirrors, Space telescopes, Shape memory alloys, Observatories, Optical instrument design, Motion models, Finite element methods

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Proceedings Article | 10 November 2011 Paper

Pointing stability and image quality of the SOFIA Airborne Telescope during initial science missions

Ulrich Lampater, Paul Keas, Rick Brewster, Terry Herter, Juergen Wolf, Enrico Pfueller, Manuel Wiedemann, Stefan Teufel, Franziska Harms, Holger Jakob, Hans-Peter Roser

Proceedings Volume 8336, 833608 (2011) https://doi.org/10.1117/12.915762

KEYWORDS: Telescopes, Image quality, Mirrors, Space telescopes, Motion measurement, Observatories, Control systems design, Control systems, Gyroscopes, Motion estimation

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Proceedings Article | 5 August 2010 Paper

SOFIA telescope modal survey test and test-model correlation

Paul Keas, Rick Brewster, Jorge Guerra, Ulrich Lampater, Hans Kärcher, Stefan Teufel, Jörg Wagner

Proceedings Volume 7738, 77380K (2010) https://doi.org/10.1117/12.856507

KEYWORDS: Telescopes, Finite element methods, Space telescopes, Sensors, Observatories, Control systems, Integrated modeling, Motion models, Motion measurement, Optical instrument design

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Proceedings Article | 28 July 2010 Paper

Preparation of the pointing and control system of the SOFIA Airborne Telescope for early science missions

Ulrich Lampater, Terry Herter, Paul Keas, Franziska Harms, Christian Engfer, Peter Salewsky, Holger Jakob, Hans-Peter Roeser

Proceedings Volume 7733, 77330S (2010) https://doi.org/10.1117/12.856562

KEYWORDS: Telescopes, Control systems, Space telescopes, Motion measurement, Control systems design, Mirrors, Observatories, Space operations, Aerodynamics, Actuators

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Proceedings Article | 23 July 2008 Paper

Practical considerations of joint friction and backlash in large ground-based telescope secondary optic positioning systems

Michael Cash, Daniel Bruch, Bernie Jahn, Paul Keas

Proceedings Volume 7018, 70181T (2008) https://doi.org/10.1117/12.790193

KEYWORDS: Telescopes, Kinematics, Spherical lenses, Space telescopes, Large telescopes, Electroluminescence, Actuators, Data modeling, Interfaces, Safety

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Proceedings Article | 2 July 2001 Paper

Damping SOFIA: passive and active damping for the Stratospheric Observatory for Infrared Astronomy

Joseph Maly, Paul Keas, Roger Glaese

Proceedings Volume 4331, (2001) https://doi.org/10.1117/12.432734

KEYWORDS: Telescopes, Mirrors, Space telescopes, Actuators, Infrared astronomy, Motion models, Gyroscopes, Control systems, Observatories, Finite element methods

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Showing 5 of 8 publications

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