Mr. Kanoa J. Withington Profile

Kanoa J. Withington

at Canada France Hawaii Telescope

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Author

Publications (10)

Proceedings Article | 30 August 2022 Presentation + Paper

Fighting the devil within: improving image quality by thwarting local turbulence

Olivier Lai, Mark Chun, Kanoa Withington

Proceedings Volume 12185, 121851S (2022) https://doi.org/10.1117/12.2626076

KEYWORDS: Turbulence, Telescopes, Sensors, Domes, Optical turbulence, Image quality, Adaptive optics, Point spread functions

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Proceedings Article | 29 August 2022 Presentation + Paper

Development of the Program Execution System Architecture (PESA) for MSE

C. Surace, J. Marshall, J. Sobeck, K. Szeto, K. Ho, T. Vermeulen, L. Wells, C. Wipper, K. Withington

Proceedings Volume 12189, 1218916 (2022) https://doi.org/10.1117/12.2627162

KEYWORDS: Data modeling, Sensors, Spectroscopy, Data processing, Data archive systems, Calibration, Interfaces, Algorithm development, Environmental sensing, Telescopes

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SPIE Journal Paper | 27 February 2021

Estimating carbon emissions at CFHT: a first step toward a more sustainable observatory

Nicolas Flagey, Kahea Thronas, Andreea Petric, Kanoa Withington, Michael Seidel

JATIS, Vol. 7, Issue 01, 017001, (February 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.1.017001

KEYWORDS: Carbon, Observatories, Buildings, Solar cells, Climate change, Astronomy, Solar energy, Climatology, Telescopes, Renewable energy

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As the crisis of climate change affects more people every year and leads to more severe weather patterns with unprecedented socio-economical consequence, all actors on the planet need to understand their responsibility and contribute to solving this generational problem. To tackle this issue, individuals and corporations first need to assess their carbon footprint, which then represents the groundwork for the future implementation of significant changes required to reduce that footprint. We present the carbon emissions attributed to the Canada–France–Hawaii Telescope (CFHT) for the year 2019. We partnered with CarbonBuddy and followed their method to break down the greenhouse gas (GHG) emissions of various activities at CFHT for the entire year of 2019: air travel in and out of state, ground vehicle usage, electricity consumption, and other fossil fuel utilization. The total GHG emissions of CFHT for the year 2019 amount to about 749 tons of CO2 equivalent, which corresponds to more than 16 tons per employee. About 63% of the emissions are related to electricity usage at the summit facility, about 25% to out-of-state travel, about 6% to the use of our fleet of vehicles, and about 5% to electricity usage at headquarters. We show that significant improvements have occurred in the recent past at CFHT, with the installation of solar panels and a remarkable reduction in electricity consumption at headquarters. We list suggestions to further decrease the GHG emissions in the short to long term: offset current emissions by support local projects, invest in more efficient equipment, and establish environmentally friendly habits. The fundamental work presented will facilitate the official planning at CFHT for a drastic reduction in GHG emissions with the goal to meet the objectives laid out in the 2015 Paris Accord. It will also support the design of the Maunakea Spectroscopic Explorer (MSE), the future transformation of CFHT, and allow the project to seize this opportunity and incorporate the fight against climate change as one of its core missions. By choosing to implement those changes, CFHT and MSE can become part of the solution to climate change and lead the way, locally and in the world of astronomy.

Proceedings Article | 13 December 2020 Presentation + Paper

Designing software for the science operations of Maunakea Spectroscopic Explorer

Kei Szeto, Jennifer Marshall, Nicolas Flagey, Kanoa Withington, Christian Surace

Proceedings Volume 11452, 1145207 (2020) https://doi.org/10.1117/12.2562846

KEYWORDS: Spectroscopy, Near infrared spectroscopy, Telescopes, Data archive systems, Data modeling, Multiplexing, Visible radiation, Spectral resolution

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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 | 27 July 2016 Paper

Science-based requirements and operations development for the Maunakea Spectroscopic Explorer

Alan McConnachie, Nicolas Flagey, Rick Murowinski, Kei Szeto, Derrick Salmon, Kanoa Withington, Shan Mignot

Proceedings Volume 9906, 99063M (2016) https://doi.org/10.1117/12.2232967

KEYWORDS: Spectroscopy, Astronomical imaging, Telescopes, Astronomy, Galactic astronomy, Observatories, Space telescopes, Stars, Calibration, Data archive systems

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Proceedings Article | 27 July 2016 Paper

AIR FLOW: airborne interferometric recombiner fluctuations of light at optical wavelengths

Olivier Lai, Mark Chun, Kanoa Withington

Proceedings Volume 9909, 99093H (2016) https://doi.org/10.1117/12.2233833

KEYWORDS: Domes, Optical turbulence, Sensors, Turbulence, Telescopes, Interferometry, Mach-Zehnder interferometers, Optical testing, Prototyping, Phase measurement

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Proceedings Article | 26 July 2016 Paper

Observatory software for the Maunakea Spectroscopic Explorer

Tom Vermeulen, Sidik Isani, Kanoa Withington, Kevin Ho, Kei Szeto, Rick Murowinski

Proceedings Volume 9913, 99134N (2016) https://doi.org/10.1117/12.2234297

KEYWORDS: Spectroscopy, Observatories, Telescopes, Astronomical imaging, Computer architecture, Control systems, Human-machine interfaces, Software development, Databases, Data archive systems

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Proceedings Article | 27 September 2012 Paper

Introduction to the CFHT Legacy Survey final release (CFHTLS T0007)

Jean-Charles Cuillandre, Kanoa Withington, Patrick Hudelot, Yuliana Goranova, Henry McCracken, Frédéric Magnard, Yannick Mellier, Nicolas Regnault, Marc Bétoule, Hervé Aussel, J. J. Kavelaars, Pierre Fernique, François Bonnarel, Francois Ochsenbein, Olivier Ilbert

Proceedings Volume 8448, 84480M (2012) https://doi.org/10.1117/12.925584

KEYWORDS: Calibration, Telescopes, Image quality, Imaging systems, Cameras, Data centers, Data acquisition, Photometry, Astronomical telescopes, Cadmium sulfide

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Proceedings Article | 24 September 2012 Paper

Open source pipeline for ESPaDOnS reduction and analysis

Eder Martioli, Doug Teeple, Nadine Manset, Daniel Devost, Kanoa Withington, Andre Venne, Megan Tannock

Proceedings Volume 8451, 84512B (2012) https://doi.org/10.1117/12.926627

KEYWORDS: Calibration, Sensors, Polarimetry, CCD image sensors, Image compression, Image storage, Stars, C++, Data modeling, Spectrographs

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Showing 5 of 10 publications

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