Dr. John W. Menzies Profile

Dr. John W. Menzies

at South African Astronomical Observatory

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Author

Publications (7)

Proceedings Article | 13 December 2020 Poster + Presentation + Paper

A dual-beam spectrograph design for transient follow-up with SALT

Janus Brink, John Menzies, Ockert Strydom, Melanie Saayman

Proceedings Volume 11447, 1144768 (2020) https://doi.org/10.1117/12.2560996

KEYWORDS: Spectrographs, Received signal strength, Astronomy, Spectroscopy, Large Synoptic Survey Telescope, Optical instrument design, Large telescopes, Beam splitters, Spectral resolution, Cameras

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Proceedings Article | 8 August 2016 Paper

SALT: Active control of the primary mirror with inductive edge sensors

Hitesh Gajjar, John Menzies, David Buckley, Chris Coetzee, Deon Bester, Ockert Strydom, Jonathan Love, Keith Browne

Proceedings Volume 9906, 990639 (2016) https://doi.org/10.1117/12.2234264

KEYWORDS: Sensors, Telescopes, Mirrors, Environmental sensing, Humidity, Simulation of CCA and DLA aggregates, Temperature metrology, Control systems, Transmitters, Actuators

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Proceedings Article | 22 July 2014 Paper

SALT segmented primary mirror: inductive edge sensors

Hitesh Gajjar, John Menzies, David Buckley, Christian Neel, Philippe Parbaud, Stéphane Royet

Proceedings Volume 9145, 91454X (2014) https://doi.org/10.1117/12.2056217

KEYWORDS: Sensors, Temperature metrology, Mirrors, Humidity, Environmental sensing, Actuators, Process control, Sensor performance, Telescopes, Sensing systems

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Proceedings Article | 19 July 2010 Paper

A novel optical sensor for mirror edge sensing

D. A. Buckley, S. Buous, H. Gajjar, J. Menzies, F. Schindler, K. Sändig, S. Lévêque

Proceedings Volume 7739, 773912 (2010) https://doi.org/10.1117/12.858131

KEYWORDS: Sensors, Mirrors, Reticles, Telescopes, Humidity, Prototyping, Optical sensors, Environmental sensing, Climatology, Segmented mirrors

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Proceedings Article | 19 July 2010 Paper

SALT segmented primary mirror: laboratory test results for FOGALE inductive edge sensors

John Menzies, Hitesh Gajjar, Sébastien Buous, David Buckley, Peter Gillingham

Proceedings Volume 7739, 77390X (2010) https://doi.org/10.1117/12.859130

KEYWORDS: Sensors, Mirrors, Environmental sensing, Space telescopes, Telescopes, Current controlled current source, Large telescopes, Nanotechnology, Sensor technology, Sensing systems

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Proceedings Article | 10 July 2008 Paper

SALT segmented primary mirror: commissioning capacitive edge sensing system and performance comparison with inductive sensor

Sebastien Buous, John Menzies, Hitesh Gajjar

Proceedings Volume 7012, 70123G (2008) https://doi.org/10.1117/12.788909

KEYWORDS: Sensors, Humidity, Mirrors, Temperature metrology, Sensing systems, Simulation of CCA and DLA aggregates, Telescopes, Calibration, Environmental sensing, Nanotechnology

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Proceedings Article | 23 June 2006 Paper

Results from the capacitive edge sensing system for the active alignment of the SALT primary mirror

Hitesh Gajjar, John Menzies, Jian Swiegers, Didier Rozière, Alain Courteville, Sebastien Buous, Bruno Luong

Proceedings Volume 6267, 626737 (2006) https://doi.org/10.1117/12.672103

KEYWORDS: Sensors, Mirrors, Sensing systems, Humidity, Temperature metrology, Control systems, Simulation of CCA and DLA aggregates, Actuators, Environmental sensing, Large telescopes

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Showing 5 of 7 publications

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