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Title of Journal: Sol Phys

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Abbravation: Solar Physics

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Springer Netherlands

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DOI

10.1006/icar.1997.5786

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ISSN

1573-093X

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Design and Ground Calibration of the Emphasis Typ

Authors: J Schou P H Scherrer R I Bush R Wachter S Couvidat M C RabelloSoares R S Bogart J T Hoeksema Y Liu T L Duvall D J Akin B A Allard J W Miles R Rairden R A Shine T D Tarbell A M Title C J Wolfson D F Elmore A A Norton S Tomczyk
Publish Date: 2011/10/04
Volume: 275, Issue: 1-2, Pages: 229-259
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Abstract

The Helioseismic and Magnetic Imager HMI investigation Solar Phys doi 101007/s1120701198342 2011 will study the solar interior using helioseismic techniques as well as the magnetic field near the solar surface The HMI instrument is part of the Solar Dynamics Observatory SDO that was launched on 11 February 2010 The instrument is designed to measure the Doppler shift intensity and vector magnetic field at the solar photosphere using the 6173 Å Fe i absorption line The instrument consists of a frontwindow filter a telescope a set of waveplates for polarimetry an imagestabilization system a blocking filter a fivestage Lyot filter with one tunable element two widefield tunable Michelson interferometers a pair of 40962 pixel cameras with independent shutters and associated electronics Each camera takes a fulldisk image roughly every 375 seconds giving an overall cadence of 45 seconds for the Doppler intensity and lineofsight magneticfield measurements and a slower cadence for the full vector magnetic field This article describes the design of the HMI instrument and provides an overview of the prelaunch calibration efforts Overviews of the investigation details of the calibrations data handling and the science analysis are provided in accompanying articlesThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team

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Other Papers In This Journal:
  1. Coronal Mass Ejections from the Same Active Region Cluster: Two Different Perspectives
  2. Gnevyshev Peaks in the CME Average Speeds in Cycle 23
  3. Mapping Solar Wind Streams from the Sun to 1 AU: A Comparison of Techniques
  4. Non-reflective Propagation of Kink Waves in Coronal Magnetic Loops
  5. High-Energy Emission from a Solar Flare in Hard X-rays and Microwaves
  6. Estimating Electric Current Densities in Solar Active Regions
  7. Total Solar Irradiance Measurement and Modelling during Cycle 23
  8. Reduced Coronal Emission Above Large Isolated Sunspots
  9. Observational Signatures of Impulsively Heated Coronal Loops: Power-Law Distribution of Energies
  10. Transition of the Sunspot Number from Zurich to Brussels in 1980: A Personal Perspective
  11. Very High-Resolution Solar X-Ray Imaging Using Diffractive Optics
  12. Tracking of Coronal White-Light Events by Texture
  13. An Interpretation of a Possible Mechanism for the First Ground-Level Enhancement of Solar Cycle 24
  14. Velocities and Temperatures of an Ellerman Bomb and Its Associated Features
  15. Kink Wave Propagation in Thin Isothermal Magnetic Flux Tubes
  16. Ensemble Modeling of CMEs Using the WSA–ENLIL+Cone Model
  17. A Simple Way to Estimate the Soft X-ray Class of Far-Side Solar Flares Observed with STEREO/EUVI
  18. Multi-spacecraft Observations of CIR-Associated Ion Increases During the Ulysses 2007 Ecliptic Crossing
  19. Numerical Simulation of a Solar Active Region. I: Bastille Day Flare
  20. Magnetic Topology of Active Regions and Coronal Holes: Implications for Coronal Outflows and the Solar Wind
  21. Variations in Ratio and Correlation of Solar Magnetic Fields in the Fe i 525.02 nm and Na i 589.59 nm Lines According to Mount Wilson Measurements During 2000 – 2012
  22. Oscillations in Solar Faculae. III. The Phase Relations Between Chromospheric and Photospheric Line-of-Sight Velocities
  23. A Search for Helioseismic Signature of Emerging Active Regions
  24. Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event
  25. Global Heliospheric Parameters and Cosmic-Ray Modulation: An Empirical Relation for the Last Decades
  26. Modeling of EIS Spectrum Drift from Instrumental Temperatures
  27. Preface
  28. Emission of Type II Radio Bursts – Single-Beam Versus Two-Beam Scenario
  29. Historical Heliophysical Series of the Ebro Observatory
  30. Dynamics of an Erupting Arched Magnetic Flux Rope in a Laboratory Plasma Experiment
  31. Eclipses Observed by Large Yield RAdiometer (LYRA) – A Sensitive Tool to Test Models for the Solar Irradiance
  32. The Self-Inversion of the Sign of Circular Polarization in “Halo” Microwave Sources
  33. Recent Developments of NEMO: Detection of EUV Wave Characteristics
  34. Preface
  35. Evidence that Synchrotron Emission from Nonthermal Electrons Produces the Increasing Submillimeter Spectral Component in Solar Flares
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