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Proceedings Paper

Detailed design of the imaging magnetograph experiment (IMaX): a visible imager magnetograph for the Sunrise mission
Author(s): A. Álvarez-Herrero; T. Belenguer; C. Pastor; L. González; R. L. Heredero; G. Ramos; M. Reina; A. Sánchez; J. Villanueva; L. Sabau; V. Martínez Pillet; J. A. Bonet; M. Collados; L. Jochum; E. Ballesteros; J. L. Medina Trujillo; Cobo B. Ruiz; J. C. González; J. C. del Toro Iniesta; A. C. López Jiménez; J. Castillo Lorenzo; M. Herranz; J. M. Jerónimo; P. Mellado; R. Morales; J. Rodríguez; V. Domingo; J. L. Gasent; P. Rodríquez
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Paper Abstract

In this work, it is described the Imaging Magnetograph eXperiment, IMaX, one of the three postfocal instruments of the Sunrise mission. The Sunrise project consists on a stratospheric balloon with a 1 m aperture telescope, which will fly from the Antarctica within the NASA Long Duration Balloon Program. IMaX will provide vector magnetograms of the solar surface with a spatial resolution of 70 m. This data is relevant for understanding how the magnetic fields emerge in the solar surface, how they couple the photospheric base with the million degrees of temperature of the solar corona and which are the processes that are responsible of the generation of such an immense temperatures. To meet this goal IMaX should work as a high sensitivity polarimeter, high resolution spectrometer and a near diffraction limited imager. Liquid Crystal Variable Retarders will be used as polarization modulators taking advantage of the optical retardation induced by application of low electric fields and avoiding mechanical mechanisms. Therefore, the interest of these devices for aerospace applications is envisaged. The spectral resolution required will be achieved by using a LiNbO3 Fabry-Perot etalon in double pass configuration as spectral filter before the two CCDs detectors. As well phase-diversity techniques will be implemented in order to improve the image quality. Nowadays, IMaX project is in the detailed design phase before fabrication, integration, assembly and verification. This paper briefly describes the current status of the instrument and the technical solutions developed to fulfil the scientific requirements.

Paper Details

Date Published: 7 July 2006
PDF: 9 pages
Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62654C (7 July 2006); doi: 10.1117/12.672117
Show Author Affiliations
A. Álvarez-Herrero, Instituto Nacional de Técnica Aeroespacial (Spain)
T. Belenguer, Instituto Nacional de Técnica Aeroespacial (Spain)
C. Pastor, Instituto Nacional de Técnica Aeroespacial (Spain)
L. González, Instituto Nacional de Técnica Aeroespacial (Spain)
R. L. Heredero, Instituto Nacional de Técnica Aeroespacial (Spain)
G. Ramos, Instituto Nacional de Técnica Aeroespacial (Spain)
M. Reina, Instituto Nacional de Técnica Aeroespacial (Spain)
A. Sánchez, Instituto Nacional de Técnica Aeroespacial (Spain)
J. Villanueva, Instituto Nacional de Técnica Aeroespacial (Spain)
L. Sabau, Instituto Nacional de Técnica Aeroespacial (Spain)
V. Martínez Pillet, Instituto de Astrofísica de Canarias (Spain)
J. A. Bonet, Instituto de Astrofísica de Canarias (Spain)
M. Collados, Instituto de Astrofísica de Canarias (Spain)
L. Jochum, Instituto de Astrofísica de Canarias (Spain)
E. Ballesteros, Instituto de Astrofísica de Canarias (Spain)
J. L. Medina Trujillo, Instituto de Astrofísica de Canarias (Spain)
Cobo B. Ruiz, Instituto de Astrofísica de Canarias (Spain)
J. C. González, Instituto de Astrofísica de Canarias (Spain)
J. C. del Toro Iniesta, Instituto de Astrofísica de Andalucía (Spain)
A. C. López Jiménez, Instituto de Astrofísica de Andalucía (Spain)
J. Castillo Lorenzo, Instituto de Astrofísica de Andalucía (Spain)
M. Herranz, Instituto de Astrofísica de Andalucía (Spain)
J. M. Jerónimo, Instituto de Astrofísica de Andalucía (Spain)
P. Mellado, Instituto de Astrofísica de Andalucía (Spain)
R. Morales, Instituto de Astrofísica de Andalucía (Spain)
J. Rodríguez, Instituto de Astrofísica de Andalucía (Spain)
V. Domingo, Univ. València, Paterna (Spain)
J. L. Gasent, Univ. València, Paterna (Spain)
P. Rodríquez, Univ. València, Paterna (Spain)


Published in SPIE Proceedings Vol. 6265:
Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter
John C. Mather; Howard A. MacEwen; Mattheus W. M. de Graauw, Editor(s)

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