NDLI: The Imaging Magnetograph eXperiment (IMaX) for the Sunrise Balloon-Borne Solar Observatory

Content Provider	Springer Nature Link
Author	Martínez Pillet, V. del Toro Iniesta, J. C. Álvarez Herrero, A. Domingo, V. Bonet, J. A. González Fernández, L. López Jiménez, A. Pastor, C. Gasent Blesa, J. L. Mellado, P. Piqueras, J. Aparicio, B. Balaguer, M. Ballesteros, E. Belenguer, T. Bellot Rubio, L. R. Berkefeld, T. Collados, M. Deutsch, W. Feller, A. Girela, F. Grauf, B. Heredero, R. L. Herranz, M. Jerónimo, J. M. Laguna, H. Meller, R. Menéndez, M. Morales, R. Orozco Suárez, D. Ramos, G. Reina, M. Ramos, J. L. Rodríguez, P. Sánchez, A. Uribe Patarroyo, N. Barthol, P. Gandorfer, A. Kelker, M. Schmidt, W. Solanki, S. K. Vargas Domínguez, S.
Copyright Year	2010
Abstract	The Imaging Magnetograph eXperiment (IMaX) is a spectropolarimeter built by four institutions in Spain that flew on board the Sunrise balloon-borne solar observatory in June 2009 for almost six days over the Arctic Circle. As a polarimeter, IMaX uses fast polarization modulation (based on the use of two liquid crystal retarders), real-time image accumulation, and dual-beam polarimetry to reach polarization sensitivities of 0.1%. As a spectrograph, the instrument uses a LiNbO$_{3}$ etalon in double pass and a narrow band pre-filter to achieve a spectral resolution of 85 mÅ. IMaX uses the high-Zeeman-sensitive line of Fe i at 5250.2 Å and observes all four Stokes parameters at various points inside the spectral line. This allows vector magnetograms, Dopplergrams, and intensity frames to be produced that, after reconstruction, reach spatial resolutions in the 0.15 – 0.18 arcsec range over a 50×50 arcsec field of view. Time cadences vary between 10 and 33 s, although the shortest one only includes longitudinal polarimetry. The spectral line is sampled in various ways depending on the applied observing mode, from just two points inside the line to 11 of them. All observing modes include one extra wavelength point in the nearby continuum. Gauss equivalent sensitivities are 4 G for longitudinal fields and 80 G for transverse fields per wavelength sample. The line-of-sight velocities are estimated with statistical errors of the order of 5 – 40 m s$^{−1}$. The design, calibration, and integration phases of the instrument, together with the implemented data reduction scheme, are described in some detail.
Starting Page	57
Ending Page	102
Page Count	46
File Format	PDF
ISSN	00380938
Journal	Solar Physics
Volume Number	268
Issue Number	1
e-ISSN	1573093X
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-11-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Instrumentation and data management Integrated Sun observations polarization Magnetic fields Velocity fields Extraterrestrial Physics, Space Sciences Meteorology/Climatology Astrophysics and Astroparticles
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The Imaging Magnetograph eXperiment (IMaX) for the Sunrise Balloon-Borne Solar Observatory

The Imaging Magnetograph eXperiment (IMaX) for the Sunrise balloon-borne solar observatory

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The Imaging Magnetograph eXperiment (IMaX) for the Sunrise Balloon-Borne Solar Observatory

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