Dr. Andreea O. Petric Profile

Dr. Andreea O. Petric

at Space Telescope Science Institute

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 27 August 2022 Poster + Paper

Machine learning techniques to separate the cosmic from the telluric

Frederick Dauphin, Andreea Petric, Michelle Ntampaka, Swara Ravindranath, Jennifer Marshall, Étienne Artigau, Steven Businger, Laurie Rousseau-Nepton, Andrew Stephens, Takahiro Morishita

Proceedings Volume 12180, 121804Y (2022) https://doi.org/10.1117/12.2642961

KEYWORDS: Machine learning, Telescopes, Data modeling, Spectroscopy, Spectrographs, Near infrared, Atmospheric modeling, Rayleigh scattering, Multiplexing, Infrared telescopes

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Proceedings Article | 25 August 2022 Presentation + Paper

Planning scientific operations for the Maunakea Spectroscopic Explorer

Jennifer Marshall, Jennifer Sobeck, Andreea Petric, Nicolas Flagey

Proceedings Volume 12186, 1218609 (2022) https://doi.org/10.1117/12.2629973

KEYWORDS: Spectroscopy, Astronomy, Telescopes, Software development, Optical fibers, Signal to noise ratio, Observatories, Calibration, Spectrographs, Spectral resolution

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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 | 15 December 2020 Paper

Maunakea Night-Sky Model

Andreea Petric, Nicolas Flagey, Jennifer Marshall, Leo Barba, Samuel Barden, Alexis Hill, Kei Szeto, Étienne Artigau, Andrew Stephens

Proceedings Volume 11449, 114491G (2020) https://doi.org/10.1117/12.2561879

KEYWORDS: Spectrographs, Algorithm development, Astronomy, Spectroscopy, Telescopes, Mirrors, Galactic astronomy, Optical fibers, Atmospheric modeling, Atmospheric optics

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Proceedings Article | 13 December 2020 Presentation + Paper

Science calibration for highly multiplexed fiber-fed optical spectroscopy: update from Maunakea Spectroscopic Explorer

Samuel Barden, Darren Depoy, Nicolas Flagey, Alexis Hill, Jennifer Marshall, Andreea Petric, Luke Schmidt, Kei Szeto

Proceedings Volume 11449, 1144926 (2020) https://doi.org/10.1117/12.2563025

KEYWORDS: Calibration, Spectroscopy, Multiplexing, Optical spectroscopy, Atmospheric optics, Astronomical imaging, Near infrared spectroscopy, Electroluminescent displays, Spectrographs, Integrated optics

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Proceedings Article | 13 December 2020 Paper

A design reference survey for the Maunakea Spectroscopic Explorer

Jennifer Marshall, Andreea Petric, Nicolas Flagey

Proceedings Volume 11449, 1144920 (2020) https://doi.org/10.1117/12.2562470

KEYWORDS: Spectroscopy, Spectral resolution, Multiplexing, Astronomical imaging, Telescopes, Calibration

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Proceedings Article | 3 January 2020 Paper

Maunakea Spectroscopic Explorer: instrumentation for a massively multiplexed spectroscopic survey facility

Alexis Hill, Nicolas Flagey, Jennifer Marshall, Andreea Petric, Kei Szeto

Proceedings Volume 11203, 1120309 (2020) https://doi.org/10.1117/12.2541195

KEYWORDS: Spectrographs, Spectroscopes, Multiplexing, Spectroscopy, Near infrared, Astronomical imaging, Fiber optics, Optical resolution, Aspheric lenses, Spectral resolution

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Proceedings Article | 6 July 2018 Paper

MegaCam FAST: reducing data acquisition time on the Canada-France-Hawaii Telescope’s wide-field optical imager

Kevin K. Ho, Simon Prunet, Sidik Isani, Andreea Petric, Tom Benedict

Proceedings Volume 10702, 107023H (2018) https://doi.org/10.1117/12.2313998

KEYWORDS: Charge-coupled devices, Digital signal processing, Data acquisition, Image filtering, Signal to noise ratio, Telescopes, Clocks, Data conversion, Sensors, Amplifiers

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Showing 5 of 8 publications

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