The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques

Joost van den Born; Rick Romp; A.W. Janssen; Ramon Navarro; Willem Jellema; Eline Tolstoy; Bayu Jayawardhana; Michael Hartl

doi:10.1117/12.2628877

The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques

Joost van den Born^*, Rick Romp, A.W. Janssen, Ramon Navarro, Willem Jellema, Eline Tolstoy, Bayu Jayawardhana, Michael Hartl

^*Corresponding author voor dit werk

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The differential refraction of light passing through the atmosphere can have a severe impact on image quality if no atmospheric dispersion corrector (ADC) is used. For the Extremely Large Telescope (ELT) this holds true well into the infrared. MICADO, the near-infrared imaging camera for the ELT, will employ a cryogenic ADC consisting of two counter-rotating Amici prisms with diameters of 125 mm. The mechanism will reduce the atmospheric dispersion to below 2.5 milli arcseconds (mas), with a set goal of 1 mas. In this report, we provide an overview of the current status of the ADC in development for MICADO. We summarise the optomechanical design and discuss how the cryogenic environment impacts the performance. We will also discuss our plan to use a diffraction mask in the cold pupil to calibrate and validate the performance once the instrument is fully integrated.

Originele taal-2	English
Titel	SPIE Astronomical Telescopes & Instrumentation
Uitgeverij	SPIE (Astronomical, Telescopes and Instrumentation)
Aantal pagina's	16
DOI's	https://doi.org/10.1117/12.2628877
Status	Published - aug.-2022
Evenement	SPIE Astronomical Telescopes & Instrumentation 2022 - Palais des congrèss de Montréal, Montréal, Canada Duur: 17-jul.-2022 → 22-jul.-2022 https://spie.org/conferences-and-exhibitions/astronomical-telescopes-and-instrumentation?SSO=1

Publicatie series

Naam	Ground-based and Airborne Instrumentation for Astronomy IX
Uitgeverij	SPIE
Volume	12184

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Conference	SPIE Astronomical Telescopes & Instrumentation 2022
Verkorte titel	SPIE
Land/Regio	Canada
Stad	Montréal
Periode	17/07/2022 → 22/07/2022
Internet adres	https://spie.org/conferences-and-exhibitions/astronomical-telescopes-and-instrumentation?SSO=1

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The MICADO atmospheric dispersion corrector: optomechanical design, expected performance and calibration techniquesFinal author's version, 4,43 MBLicentie: CC BY-NC

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van den Born, J., Romp, R., Janssen, A. W., Navarro, R., Jellema, W., Tolstoy, E., Jayawardhana, B., & Hartl, M. (2022). The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques. In SPIE Astronomical Telescopes & Instrumentation Artikel Paper 12184-105 (Ground-based and Airborne Instrumentation for Astronomy IX; Vol. 12184). SPIE (Astronomical, Telescopes and Instrumentation). https://doi.org/10.1117/12.2628877

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title = "The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques",

abstract = "The differential refraction of light passing through the atmosphere can have a severe impact on image quality if no atmospheric dispersion corrector (ADC) is used. For the Extremely Large Telescope (ELT) this holds true well into the infrared. MICADO, the near-infrared imaging camera for the ELT, will employ a cryogenic ADC consisting of two counter-rotating Amici prisms with diameters of 125 mm. The mechanism will reduce the atmospheric dispersion to below 2.5 milli arcseconds (mas), with a set goal of 1 mas. In this report, we provide an overview of the current status of the ADC in development for MICADO. We summarise the optomechanical design and discuss how the cryogenic environment impacts the performance. We will also discuss our plan to use a diffraction mask in the cold pupil to calibrate and validate the performance once the instrument is fully integrated.",

keywords = "MICADO, EELT, Opto-mechatronics, Science instrumentation",

author = "{van den Born}, Joost and Rick Romp and A.W. Janssen and Ramon Navarro and Willem Jellema and Eline Tolstoy and Bayu Jayawardhana and Michael Hartl",

year = "2022",

month = aug,

doi = "10.1117/12.2628877",

language = "English",

series = "Ground-based and Airborne Instrumentation for Astronomy IX",

publisher = "SPIE (Astronomical, Telescopes and Instrumentation)",

booktitle = "SPIE Astronomical Telescopes & Instrumentation",

note = "SPIE Astronomical Telescopes & Instrumentation 2022, SPIE ; Conference date: 17-07-2022 Through 22-07-2022",

url = "https://spie.org/conferences-and-exhibitions/astronomical-telescopes-and-instrumentation?SSO=1",

}

van den Born, J, Romp, R, Janssen, AW, Navarro, R, Jellema, W , Tolstoy, E , Jayawardhana, B & Hartl, M 2022, The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques. in SPIE Astronomical Telescopes & Instrumentation., Paper 12184-105, Ground-based and Airborne Instrumentation for Astronomy IX, vol. 12184, SPIE (Astronomical, Telescopes and Instrumentation), SPIE Astronomical Telescopes & Instrumentation 2022, Montréal, Quebec, Canada, 17/07/2022. https://doi.org/10.1117/12.2628877

The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques. / van den Born, Joost; Romp, Rick; Janssen, A.W. et al.
SPIE Astronomical Telescopes & Instrumentation. SPIE (Astronomical, Telescopes and Instrumentation), 2022. Paper 12184-105 (Ground-based and Airborne Instrumentation for Astronomy IX; Vol. 12184).

Onderzoeksoutput › Academic

TY - GEN

T1 - The MICADO Atmospheric Dispersion Corrector

T2 - SPIE Astronomical Telescopes & Instrumentation 2022

AU - van den Born, Joost

AU - Romp, Rick

AU - Janssen, A.W.

AU - Navarro, Ramon

AU - Jellema, Willem

AU - Tolstoy, Eline

AU - Jayawardhana, Bayu

AU - Hartl, Michael

PY - 2022/8

Y1 - 2022/8

N2 - The differential refraction of light passing through the atmosphere can have a severe impact on image quality if no atmospheric dispersion corrector (ADC) is used. For the Extremely Large Telescope (ELT) this holds true well into the infrared. MICADO, the near-infrared imaging camera for the ELT, will employ a cryogenic ADC consisting of two counter-rotating Amici prisms with diameters of 125 mm. The mechanism will reduce the atmospheric dispersion to below 2.5 milli arcseconds (mas), with a set goal of 1 mas. In this report, we provide an overview of the current status of the ADC in development for MICADO. We summarise the optomechanical design and discuss how the cryogenic environment impacts the performance. We will also discuss our plan to use a diffraction mask in the cold pupil to calibrate and validate the performance once the instrument is fully integrated.

AB - The differential refraction of light passing through the atmosphere can have a severe impact on image quality if no atmospheric dispersion corrector (ADC) is used. For the Extremely Large Telescope (ELT) this holds true well into the infrared. MICADO, the near-infrared imaging camera for the ELT, will employ a cryogenic ADC consisting of two counter-rotating Amici prisms with diameters of 125 mm. The mechanism will reduce the atmospheric dispersion to below 2.5 milli arcseconds (mas), with a set goal of 1 mas. In this report, we provide an overview of the current status of the ADC in development for MICADO. We summarise the optomechanical design and discuss how the cryogenic environment impacts the performance. We will also discuss our plan to use a diffraction mask in the cold pupil to calibrate and validate the performance once the instrument is fully integrated.

KW - MICADO

KW - EELT

KW - Opto-mechatronics

KW - Science instrumentation

U2 - 10.1117/12.2628877

DO - 10.1117/12.2628877

M3 - Conference contribution

T3 - Ground-based and Airborne Instrumentation for Astronomy IX

BT - SPIE Astronomical Telescopes & Instrumentation

PB - SPIE (Astronomical, Telescopes and Instrumentation)

Y2 - 17 July 2022 through 22 July 2022

ER -

van den Born J, Romp R, Janssen AW, Navarro R, Jellema W , Tolstoy E et al. The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques. In SPIE Astronomical Telescopes & Instrumentation. SPIE (Astronomical, Telescopes and Instrumentation). 2022. Paper 12184-105. (Ground-based and Airborne Instrumentation for Astronomy IX). doi: 10.1117/12.2628877

The MICADO Atmospheric Dispersion Corrector: Optomechanical design, expected performance and calibration techniques

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