ANDES, the high-resolution spectrograph for the ELT: status of the calibration unit design

Philipp Huke; Léa Bonhomme; Christopher Broeg; Isabelle Boisse; Kamalesh Dadi; Michael Debus; Paolo Di Marcantonio; Omar Gabella; Wolfgang Gaessler; Enrico Giro; Jörg Knoche; Viljon Sekseni; Miriam Juliana Brandt; Michael Lehmitz; Jochen Liske; Madhusudan Malve; Piotr Maslowski; Freerk Schütt; Richard McCracken; Christoph Mordasini; Derryck Reid; Ansgar Reiners; Sebastian Schäfer; Mirsad Sarajlic; Joackim Defigueirdo; Yuk Shan Cheng; Alessio Zanutta; Edoardo Redaelli; Eike Günther; Jennifer Zimara

doi:10.1117/12.3104634

ANDES, the high-resolution spectrograph for the ELT: status of the calibration unit design

Philipp Huke
, Léa Bonhomme
, Christopher Broeg
, Isabelle Boisse
, Kamalesh Dadi
, Michael Debus
, Paolo Di Marcantonio
, Omar Gabella
, Wolfgang Gaessler
, Enrico Giro
, Jörg Knoche
, Viljon Sekseni
, Miriam Juliana Brandt
, Michael Lehmitz
, Jochen Liske
, Madhusudan Malve
, Piotr Maslowski
, Freerk Schütt
, Richard McCracken
, Christoph Mordasini

Derryck Reid, Ansgar Reiners, Sebastian Schäfer, Mirsad Sarajlic, Joackim Defigueirdo, Yuk Shan Cheng, Alessio Zanutta, Edoardo Redaelli, Eike Günther, Jennifer Zimara

Research output: Contribution to conference › Poster › peer-review

Abstract

The instrumentation plan for the ELT foresees the ArmazoNes high Dispersion Echelle Spectrograph (ANDES). All subsystems of the ANDES-project underwent internal subsystems- preliminary design reviews (ssPDR). The systems-level PDR is scheduled for mid 2026 concluding phase B. Even though the ANDES-spectrograph is designed for maximum intrinsic stability, calibration and thus a calibration unit (CU) is mandatory. To allow for installation at different places at the ELT (Coudé-room, intermediate Nasmyth-platform) the CU mirrors the spectrographs design with three independent units. The design of the individual CU is condensed by now to a high level of detail and ready for the next milestone, the systems PDR. Here, we show the managerial part of the CU, regarding team and timeline, the engineering design of one CU (RIZ) and outline the next steps in each element of the CU towards the Final Design Review and the following Manufacturing, Assembly, Integration and Testing (MAIT) in Europe.

Original language	English
Pages	289
DOIs	https://doi.org/10.1117/12.3104634
Publication status	Published - 5 Jul 2026
Event	SPIE Astronomical Telescopes + Instrumentation 2026: From concept to cosmos: engineering the future of astronomy through global collaboration - Copenhagen, Denmark Duration: 5 Jul 2026 → 10 Jul 2026 https://spie.org/conferences-and-exhibitions/astronomical-telescopes-and-instrumentation

Conference

Conference	SPIE Astronomical Telescopes + Instrumentation 2026
Country/Territory	Denmark
City	Copenhagen
Period	5/07/26 → 10/07/26
Internet address	https://spie.org/conferences-and-exhibitions/astronomical-telescopes-and-instrumentation

Keywords

ANDES Calibration Unit
High-precision RV
Radial Velocities

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10.1117/12.3104634

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Huke, P., Bonhomme, L., Broeg, C., Boisse, I., Dadi, K., Debus, M., Di Marcantonio, P., Gabella, O., Gaessler, W., Giro, E., Knoche, J., Sekseni, V., Brandt, M. J., Lehmitz, M., Liske, J., Malve, M., Maslowski, P., Schütt, F., McCracken, R., ... Zimara, J. (2026). ANDES, the high-resolution spectrograph for the ELT: status of the calibration unit design. 289. Poster session presented at SPIE Astronomical Telescopes + Instrumentation 2026, Copenhagen, Denmark. https://doi.org/10.1117/12.3104634

@conference{c70c85916ede457799ab7ea49aabd3ee,

title = "ANDES, the high-resolution spectrograph for the ELT: status of the calibration unit design",

abstract = "The instrumentation plan for the ELT foresees the ArmazoNes high Dispersion Echelle Spectrograph (ANDES). All subsystems of the ANDES-project underwent internal subsystems- preliminary design reviews (ssPDR). The systems-level PDR is scheduled for mid 2026 concluding phase B. Even though the ANDES-spectrograph is designed for maximum intrinsic stability, calibration and thus a calibration unit (CU) is mandatory. To allow for installation at different places at the ELT (Coud{\'e}-room, intermediate Nasmyth-platform) the CU mirrors the spectrographs design with three independent units. The design of the individual CU is condensed by now to a high level of detail and ready for the next milestone, the systems PDR. Here, we show the managerial part of the CU, regarding team and timeline, the engineering design of one CU (RIZ) and outline the next steps in each element of the CU towards the Final Design Review and the following Manufacturing, Assembly, Integration and Testing (MAIT) in Europe.",

keywords = "ANDES Calibration Unit, High-precision RV, Radial Velocities",

author = "Philipp Huke and L{\'e}a Bonhomme and Christopher Broeg and Isabelle Boisse and Kamalesh Dadi and Michael Debus and \{Di Marcantonio\}, Paolo and Omar Gabella and Wolfgang Gaessler and Enrico Giro and J{\"o}rg Knoche and Viljon Sekseni and Brandt, \{Miriam Juliana\} and Michael Lehmitz and Jochen Liske and Madhusudan Malve and Piotr Maslowski and Freerk Sch{\"u}tt and Richard McCracken and Christoph Mordasini and Derryck Reid and Ansgar Reiners and Sebastian Sch{\"a}fer and Mirsad Sarajlic and Joackim Defigueirdo and Cheng, \{Yuk Shan\} and Alessio Zanutta and Edoardo Redaelli and Eike G{\"u}nther and Jennifer Zimara",

year = "2026",

month = jul,

day = "5",

doi = "10.1117/12.3104634",

language = "English",

pages = "289",

note = "SPIE Astronomical Telescopes + Instrumentation 2026 : From concept to cosmos: engineering the future of astronomy through global collaboration ; Conference date: 05-07-2026 Through 10-07-2026",

url = "https://spie.org/conferences-and-exhibitions/astronomical-telescopes-and-instrumentation",

}

Huke, P, Bonhomme, L, Broeg, C, Boisse, I, Dadi, K, Debus, M, Di Marcantonio, P, Gabella, O, Gaessler, W, Giro, E, Knoche, J, Sekseni, V, Brandt, MJ, Lehmitz, M, Liske, J, Malve, M, Maslowski, P, Schütt, F, McCracken, R, Mordasini, C, Reid, D, Reiners, A, Schäfer, S, Sarajlic, M, Defigueirdo, J, Cheng, YS, Zanutta, A, Redaelli, E, Günther, E & Zimara, J 2026, 'ANDES, the high-resolution spectrograph for the ELT: status of the calibration unit design', SPIE Astronomical Telescopes + Instrumentation 2026, Copenhagen, Denmark, 5/07/26 - 10/07/26 pp. 289. https://doi.org/10.1117/12.3104634

TY - CONF

T1 - ANDES, the high-resolution spectrograph for the ELT: status of the calibration unit design

AU - Huke, Philipp

AU - Bonhomme, Léa

AU - Broeg, Christopher

AU - Boisse, Isabelle

AU - Dadi, Kamalesh

AU - Debus, Michael

AU - Di Marcantonio, Paolo

AU - Gabella, Omar

AU - Gaessler, Wolfgang

AU - Giro, Enrico

AU - Knoche, Jörg

AU - Sekseni, Viljon

AU - Brandt, Miriam Juliana

AU - Lehmitz, Michael

AU - Liske, Jochen

AU - Malve, Madhusudan

AU - Maslowski, Piotr

AU - Schütt, Freerk

AU - McCracken, Richard

AU - Mordasini, Christoph

AU - Reid, Derryck

AU - Reiners, Ansgar

AU - Schäfer, Sebastian

AU - Sarajlic, Mirsad

AU - Defigueirdo, Joackim

AU - Cheng, Yuk Shan

AU - Zanutta, Alessio

AU - Redaelli, Edoardo

AU - Günther, Eike

AU - Zimara, Jennifer

PY - 2026/7/5

Y1 - 2026/7/5

N2 - The instrumentation plan for the ELT foresees the ArmazoNes high Dispersion Echelle Spectrograph (ANDES). All subsystems of the ANDES-project underwent internal subsystems- preliminary design reviews (ssPDR). The systems-level PDR is scheduled for mid 2026 concluding phase B. Even though the ANDES-spectrograph is designed for maximum intrinsic stability, calibration and thus a calibration unit (CU) is mandatory. To allow for installation at different places at the ELT (Coudé-room, intermediate Nasmyth-platform) the CU mirrors the spectrographs design with three independent units. The design of the individual CU is condensed by now to a high level of detail and ready for the next milestone, the systems PDR. Here, we show the managerial part of the CU, regarding team and timeline, the engineering design of one CU (RIZ) and outline the next steps in each element of the CU towards the Final Design Review and the following Manufacturing, Assembly, Integration and Testing (MAIT) in Europe.

AB - The instrumentation plan for the ELT foresees the ArmazoNes high Dispersion Echelle Spectrograph (ANDES). All subsystems of the ANDES-project underwent internal subsystems- preliminary design reviews (ssPDR). The systems-level PDR is scheduled for mid 2026 concluding phase B. Even though the ANDES-spectrograph is designed for maximum intrinsic stability, calibration and thus a calibration unit (CU) is mandatory. To allow for installation at different places at the ELT (Coudé-room, intermediate Nasmyth-platform) the CU mirrors the spectrographs design with three independent units. The design of the individual CU is condensed by now to a high level of detail and ready for the next milestone, the systems PDR. Here, we show the managerial part of the CU, regarding team and timeline, the engineering design of one CU (RIZ) and outline the next steps in each element of the CU towards the Final Design Review and the following Manufacturing, Assembly, Integration and Testing (MAIT) in Europe.

KW - ANDES Calibration Unit

KW - High-precision RV

KW - Radial Velocities

U2 - 10.1117/12.3104634

DO - 10.1117/12.3104634

M3 - Poster

SP - 289

T2 - SPIE Astronomical Telescopes + Instrumentation 2026

Y2 - 5 July 2026 through 10 July 2026

ER -

ANDES, the high-resolution spectrograph for the ELT: status of the calibration unit design

Abstract

Conference

Keywords

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