Dr. Nathan P. Loewen Profile

Dr. Nathan P. Loewen

at Sightline Engineering Ltd

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 11 September 2024 Presentation + Paper

The Giant Magellan Telescope Mount: final design completion and start of fabrication

S. Park, K. Beifus, C. Echols, C. Gottschalk, N. Juelsgaard, K.-M. Lam, N. Loewen, B. Smith, W. Burgett

Proceedings Volume 13094, 130940A (2024) https://doi.org/10.1117/12.3020255

KEYWORDS: Design, Fabrication, Telescopes, Mirrors, Prototyping, Earthquakes

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Proceedings Article | 29 August 2022 Presentation + Paper

The Giant Magellan Telescope mount: the core of a next generation 25.4-m aperture ELT

W. Burgett, S. Park, K. Beifus, C. Echols, K.-M. Lam, N. Loewen, B. Smith, D. Ashby, R. Bernstein

Proceedings Volume 12182, 121821G (2022) https://doi.org/10.1117/12.2629729

KEYWORDS: Mirrors, Telescopes, Interfaces, Prototyping, Off axis mirrors, Actuators, Optical instrument design, Manufacturing, Control systems, Image quality

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Proceedings Article | 13 December 2020 Presentation + Paper

Developing the ngVLA Radio Telescope 6m antenna

Dean Chalmers, Gordon Lacy, Mohammad Islam, Nathan Loewen, Emile Van Vuuren, Lynn Baker

Proceedings Volume 11445, 114450M (2020) https://doi.org/10.1117/12.2562977

KEYWORDS: Telescopes, Radio telescopes, Reflectors, Optical instrument design, Distortion, Carbon, Composites, Reflector telescopes

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Proceedings Article | 10 July 2018 Presentation + Paper

Transforming the Canada France Hawaii Telescope (CFHT) into the Maunakea Spectroscopic Explorer (MSE): a conceptual observatory building and facilities design

Steven Bauman, Greg Barrick, Tom Benedict, Armando Bilbao, Alexis Hill, Nicolas Flagey, Casey Elizares, Mike Gedig, Greg Green, Eric Grigel, David Lo, Ivan Look, Thomas Lorentz, Nathan Loewen, Eric Manuel, Alan McConnachie, Ronny Muller, Gaizka Murga, Rick Murowinski, Federico Ruan, Derrick Salmon, Kei Szeto, Jose Teran, Rafael Urrutia

Proceedings Volume 10704, 107041E (2018) https://doi.org/10.1117/12.2311350

KEYWORDS: Telescopes, Observatories, Space telescopes, Coating, Optical instrument design, Spectrographs, Spectroscopes, Spectroscopy, Carbon, Soil science

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Proceedings Article | 27 July 2016 Paper

A survey of enclosure suspension and rotation systems for 3-15m telescopes

Bruce Bigelow, Nathan Loewen, Emile van Vuuren, William Burgett

Proceedings Volume 9906, 99060E (2016) https://doi.org/10.1117/12.2231530

KEYWORDS: Telescopes, Observatories, Infrared telescopes, Optical instrument design, Large telescopes, Interfaces, Optical instrument design, Space telescopes, Gemini Observatory, Head, Manufacturing

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Proceedings Article | 27 July 2016 Paper

MSE observatory: a revised and optimized astronomical facility

Steven Bauman, Mathieu Angers, Tom Benedict, David Crampton, Nicolas Flagey, Mike Gedig, Greg Green, Andy Liu, David Lo, Nathan Loewen, Alan McConnachie, Rick Murowinski, René Racine, Derrick Salmon, Siegfried Stiemer, Kei Szeto, Di Wu

Proceedings Volume 9906, 990605 (2016) https://doi.org/10.1117/12.2234311

KEYWORDS: Telescopes, Observatories, Spectroscopes, Astronomy, Space telescopes, Spectrographs, Coating, Camera shutters, Mirrors, 3D modeling

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Proceedings Article | 27 July 2016 Paper

Maunakea spectroscopic explorer design development from feasibility concept to baseline design

Kei Szeto, Hau Bai, Steven Bauman, David Crampton, Nicolas Flagey, Mike Gedig, Peter Gillingham, Xuefei Gong, Kevin Ho, Nathan Loewen, Alan McConnachie, Shan Mignot, Richard Murowinski, Derrick Salmon, Will Saunders, Siegfried Stiemer, Tom Vermeulen, Kanoa Withington, Kai Zhang

Proceedings Volume 9906, 99062J (2016) https://doi.org/10.1117/12.2234213

KEYWORDS: Optical instrument design, Telescopes, Spectroscopy, Astronomical imaging, Spectrographs, Optical instrument design, Space telescopes, Computer aided design, Observatories, Control systems, Optical design

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Proceedings Article | 22 July 2014 Paper

Progress on the New York State Observatory: a new 12-meter astronomical telescope

T. Sebring, C. O'Dea, S. Baum, J. Teran, N. Loewen, C. Stutzki, R. Egerman, G. Bonomi

Proceedings Volume 9145, 91453D (2014) https://doi.org/10.1117/12.2062884

KEYWORDS: Telescopes, Space telescopes, Mirrors, Actuators, Observatories, Optical instrument design, Astronomical telescopes, Astronomy, Domes, Manufacturing

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Proceedings Article | 22 July 2014 Paper

Conceptual design study to determine optimal enclosure vent configuration for the Maunakea Spectroscopic Explorer (MSE)

Kei Szeto, Konstantinos Vogiatzis, Horia Hangan, Chowdhury Jubayer, Craig Breckenridge, Nathan Loewen, Steven Bauman, Derrick Salmon

Proceedings Volume 9145, 91450A (2014) https://doi.org/10.1117/12.2056728

KEYWORDS: Telescopes, Device simulation, Spectroscopy, Mirrors, Turbulence, Wind energy, Astronomical imaging, Ions, Observatories, Signal attenuation

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Proceedings Article | 27 September 2012 Paper

Feasibility studies to upgrade the Canada-France-Hawaii Telescope site for the next generation Canada-France-Hawaii Telescope

Kei Szeto, Mathieu Angers, Craig Breckenridge, Steven Bauman, Nathan Loewen, David Loop, Alan McConnachie, Jonh Pazder, Derrick Salmon, Paolo Spano, Siegfried Stiemer, Christian Veillet

Proceedings Volume 8444, 84440W (2012) https://doi.org/10.1117/12.926682

KEYWORDS: Telescopes, Space telescopes, Spectrographs, Finite element methods, Optical instrument design, Mirrors, Camera shutters, Optical fibers, Earthquakes, Spectroscopy

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Proceedings Article | 5 August 2010 Paper

Enclosure design status for Thirty Meter Telescope

N. Loewen, C. Breckenridge

Proceedings Volume 7733, 773322 (2010) https://doi.org/10.1117/12.856526

KEYWORDS: Camera shutters, Computer aided design, Telescopes, Optical instrument design, Skin, Structural design, Reliability, Manufacturing, Observatories, Thirty Meter Telescope

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Proceedings Article | 10 July 2008 Paper

Enclosure design for Thirty Meter Telescope

N. Loewen, C. Breckenridge, A. Vasiljevic

Proceedings Volume 7012, 70121D (2008) https://doi.org/10.1117/12.787689

KEYWORDS: Camera shutters, Telescopes, Optical instrument design, Skin, Assembly tolerances, Structural dynamics, Space telescopes, Aerodynamics, Structural design, Thirty Meter Telescope

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Proceedings Article | 26 June 2006 Paper

TMT telescope structure system: design and development

Kei Szeto, Scott Roberts, Simon Sun, Larry Stepp, Jerry Nelson, Mike Gedig, Nathan Loewen, Dominic Tsang

Proceedings Volume 6267, 62672Q (2006) https://doi.org/10.1117/12.669731

KEYWORDS: Telescopes, Mirrors, Optical instrument design, Space telescopes, Structural design, Systems modeling, Optical components, Actuators, Image quality, Thirty Meter Telescope

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Proceedings Article | 23 June 2006 Paper

Conceptual design of enclosure for Thirty Meter Telescope

N. Loewen, W. Brzezik, J. Fitzsimmons, D. Halliday, S. Sun, A. Vasiljevic

Proceedings Volume 6267, 62672I (2006) https://doi.org/10.1117/12.671867

KEYWORDS: Camera shutters, Telescopes, Optical instrument design, Interfaces, Spherical lenses, Skin, Control systems, Structural design, Tolerancing, Thirty Meter Telescope

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Proceedings Article | 23 June 2006 Paper

Feasibility study of calotte enclosure for Cornell Caltech Atacama Telescope

N. Loewen, W. Brzezik, D. Halliday, T. Sebring

Proceedings Volume 6267, 62672J (2006) https://doi.org/10.1117/12.670037

KEYWORDS: Camera shutters, Telescopes, Interfaces, Space telescopes, Assembly tolerances, Spherical lenses, Structural dynamics, Tolerancing, Finite element methods, Mechanical engineering

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Proceedings Article | 7 July 2004 Paper

Integrated modeling of the Canadian Very Large Optical Telescope

Scott Roberts, John Pazder, Joeleff Fitzsimmons, Glen Herriot, Nathan Loewen, Malcolm Smith, Jennifer Dunn, Leslie Saddlemyer

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566206

KEYWORDS: Mirrors, Telescopes, Integrated modeling, Systems modeling, Actuators, Structural dynamics, Device simulation, Integrated optics, Geometrical optics, Interfaces

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Showing 5 of 16 publications

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