Holographic beam mapping of the CHIME pathfinder array

Philippe Berger; Laura B. Newburgh; Mandana Amiri; Kevin Bandura; Jean-François Cliche; Liam Connor; Meiling Deng; Nolan Denman; Matt Dobbs; Mateus Fandino; Adam J. Gilbert; Deborah Good; Mark Halpern; David Hanna; Adam D. Hincks; Gary Hinshaw; Carolin Höfer; Andre M. Johnson; Tom L. Landecker; Kiyoshi W. Masui; Juan Mena Parra; Niels Oppermann; Ue-Li Pen; Jeffrey B. Peterson; Andre Recnik; Timothy Robishaw; J. Richard Shaw; Seth Siegel; Kris Sigurdson; Kendrick Smith; Emilie Storer; Ian Tretyakov; Kwinten Van Gassen; Keith Vanderlinde; Donald Wiebe

doi:10.1117/12.2233782

18 August 2016 Holographic beam mapping of the CHIME pathfinder array

Philippe Berger, Laura B. Newburgh, Mandana Amiri, Kevin Bandura, Jean-François Cliche, Liam Connor, Meiling Deng, Nolan Denman, Matt Dobbs, Mateus Fandino, Adam J. Gilbert, Deborah Good, Mark Halpern, David Hanna, Adam D. Hincks, Gary Hinshaw, Carolin Höfer, Andre M. Johnson, Tom L. Landecker, Kiyoshi W. Masui, Juan Mena Parra, Niels Oppermann, Ue-Li Pen, Jeffrey B. Peterson, Andre Recnik, Timothy Robishaw, J. Richard Shaw, Seth Siegel, Kris Sigurdson, Kendrick Smith, Emilie Storer, Ian Tretyakov, Kwinten Van Gassen, Keith Vanderlinde, Donald Wiebe

Author Affiliations +

Proceedings Volume 9906, Ground-based and Airborne Telescopes VI; 99060D (2016) https://doi.org/10.1117/12.2233782
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) Pathfinder radio telescope is currently surveying the northern hemisphere between 400 and 800 MHz. By mapping the large scale structure of neutral hydrogen through its redshifted 21 cm line emission between z∼0.8-2.5 CHIME will contribute to our understanding of Dark Energy. Bright astrophysical foregrounds must be separated from the neutral hydrogen signal, a task which requires precise characterization of the polarized telescope beams. Using the DRAO John A. Galt 26 m telescope, we have developed a holography instrument and technique for mapping the CHIME Pathfinder beams. We report the status of the instrument and initial results of this effort.

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Philippe Berger, Laura B. Newburgh, Mandana Amiri, Kevin Bandura, Jean-François Cliche, Liam Connor, Meiling Deng, Nolan Denman, Matt Dobbs, Mateus Fandino, Adam J. Gilbert, Deborah Good, Mark Halpern, David Hanna, Adam D. Hincks, Gary Hinshaw, Carolin Höfer, Andre M. Johnson, Tom L. Landecker, Kiyoshi W. Masui, Juan Mena Parra, Niels Oppermann, Ue-Li Pen, Jeffrey B. Peterson, Andre Recnik, Timothy Robishaw, J. Richard Shaw, Seth Siegel, Kris Sigurdson, Kendrick Smith, Emilie Storer, Ian Tretyakov, Kwinten Van Gassen, Keith Vanderlinde, and Donald Wiebe "Holographic beam mapping of the CHIME pathfinder array", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99060D (18 August 2016); https://doi.org/10.1117/12.2233782

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