CAL2: project update of the NRC Canada facility-class focal plane wavefront sensor for the Gemini Planet Imager 2 upgrade

Christian Marois; Olivier Lardière; Joeleff Fitzsimmons; Mathieu Demers; Adam B. Johnson; Saugata Dutt; Patrick Nkwari; Benjamin Gerard; Jennifer Dunn; Duan Li; Qiang Fu; Denis Brousseau; Suresh Sivanandam; William Thompson; Christopher Mann; Garima Singh; Marc-André Boucher; Tim Hardy; Krzysztof Caputa; Simon Thibault; Dmitry Savransky; Wolfgang Heidrich; Maaike van Kooten; Jean-Pierre Véran; Rebecca Jensen-Clem; Darryl Gamroth; Colin Bradley; Sanjana Rawat; Öykü S. Galvan; Glen Herriot; Jean-Thomas Landry

doi:10.1117/12.3020617

27 August 2024 CAL2: project update of the NRC Canada facility-class focal plane wavefront sensor for the Gemini Planet Imager 2 upgrade

Christian Marois, Olivier Lardière, Joeleff Fitzsimmons, Mathieu Demers, Adam B. Johnson, Saugata Dutt, Patrick Nkwari, Benjamin Gerard, Jennifer Dunn, Duan Li, Qiang Fu, Denis Brousseau, Suresh Sivanandam, William Thompson, Christopher Mann, Garima Singh, Marc-André Boucher, Tim Hardy, Krzysztof Caputa, Simon Thibault, Dmitry Savransky, Wolfgang Heidrich, Maaike van Kooten, Jean-Pierre Véran, Rebecca Jensen-Clem, Darryl Gamroth, Colin Bradley, Sanjana Rawat, Öykü S. Galvan, Glen Herriot, Jean-Thomas Landry

Author Affiliations +

Proceedings Volume 13097, Adaptive Optics Systems IX; 1309708 (2024) https://doi.org/10.1117/12.3020617
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The imaging search for exoplanets is mainly limited by quasi-static speckle noise that have lifetimes between milliseconds and hours. Attempts to remove this noise using post-processing by building a point spread function (PSF) model from diversity in time, wavelength, and so-forth are limited to a small improvement due to the evolution of the noise along these same axes. The Calibration 2 (CAL2) system, being built by an international team, is a National Research Council of Canada (NRC) funded facility-class focal plane wavefront sensor for the Gemini Planet Imager 2 (GPI2) upgrade. The project consists of a complete rebuild of the GPI calibration (CAL) system. Based on the self-coherent camera concept and the FAST focal plane mask, a fraction of the near-infrared (NIR) science bandpass is extracted using a new dichroic wheel to perform focal plane wavefront sensing, with the goal to do science while also improving the contrast for the GPI2 IFS, up to a factor of 100x on bright stars. The project is at the final design review stage, and construction is expected to start summer/fall 2024, with assembly late fall 2024, and shipping to the Gemini North observatory middle of 2025.

Conference Presentation

Citation Download Citation

Christian Marois, Olivier Lardière, Joeleff Fitzsimmons, Mathieu Demers, Adam B. Johnson, Saugata Dutt, Patrick Nkwari, Benjamin Gerard, Jennifer Dunn, Duan Li, Qiang Fu, Denis Brousseau, Suresh Sivanandam, William Thompson, Christopher Mann, Garima Singh, Marc-André Boucher, Tim Hardy, Krzysztof Caputa, Simon Thibault, Dmitry Savransky, Wolfgang Heidrich, Maaike van Kooten, Jean-Pierre Véran, Rebecca Jensen-Clem, Darryl Gamroth, Colin Bradley, Sanjana Rawat, Öykü S. Galvan, Glen Herriot, and Jean-Thomas Landry "CAL2: project update of the NRC Canada facility-class focal plane wavefront sensor for the Gemini Planet Imager 2 upgrade", Proc. SPIE 13097, Adaptive Optics Systems IX, 1309708 (27 August 2024); https://doi.org/10.1117/12.3020617

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE