MARCOT Pathfinder at Calar Alto progress report

Martin M. Roth; Jesús Aceituno; José L. Ortiz; Kalaga Madhav; Stefan Cikota; John Davenport; Thomas Fechner; Pedro Amado; Fran J. Pozuelos; Rafael Luque; Nicolas Morales

doi:10.1117/12.2629901

29 August 2022 MARCOT Pathfinder at Calar Alto progress report

Martin M. Roth, Jesús Aceituno, José L. Ortiz, Kalaga Madhav, Stefan Cikota, John Davenport, Thomas Fechner, Pedro Amado, Fran J. Pozuelos, Rafael Luque, Nicolas Morales

Author Affiliations +

Proceedings Volume 12182, Ground-based and Airborne Telescopes IX; 121820M (2022) https://doi.org/10.1117/12.2629901
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

MARCOT Pathfinder is a precursor for MARCOT (Multi Array of Combined Telescopes) at Calar Alto Observatory (CAHA) in Spain. MARCOT is intended to provide CARMENES, currently fiber-fed from the CAHA 3.5m Telescope, with a 5-15m light collecting area from a battery of several tens of small telescopes that are incoherently fed into the final joint single fiber feed of the spectrograph. The modular concept, based on commercially available telescopes, results in cost estimates that are a fraction of the ones for extremely large telescopes (ELT). As a novel approach, MARCOT will employ Multi-Mode Photonic Lanterns (MM-PL) that are being developed as a variant of classical photonic lanterns, to combine the light from the individual telescopes to a single fiber feed to the instrument. This progress report presents the overall concept of MARCOT, the pathfinder telescope and enclosure that is being commissioned at CAHA, the concept of MM-PL, and the next step of installing the Potsdam Multiplex Raman Spectrograph (MRS). MARCOT Pathfinder will be used to validate the conceptual design and predicted performance of MM-PL on sky with a 7-unit telescope prototype.

Conference Presentation

Citation Download Citation

Martin M. Roth, Jesús Aceituno, José L. Ortiz, Kalaga Madhav, Stefan Cikota, John Davenport, Thomas Fechner, Pedro Amado, Fran J. Pozuelos, Rafael Luque, and Nicolas Morales "MARCOT Pathfinder at Calar Alto progress report", Proc. SPIE 12182, Ground-based and Airborne Telescopes IX, 121820M (29 August 2022); https://doi.org/10.1117/12.2629901

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