Статья

Design and Ground Calibration of the Helioseismic and Magnetic Imager (HMI) Instrument on the Solar Dynamics Observatory (SDO)

J. SchouW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAP. H. ScherrerW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAR. I. BushW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAR. WachterW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAS. CouvidatW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAM. C. Rabello‐SoaresW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAR. S. BogartW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAJ. T. HoeksemaW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAYang LiuW.W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, USAT. L. DuvallLaboratory for Astronomy and Solar Physics, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USAD. J. AkinLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAB. A. AllardLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAJohn W. MilesLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAR. L. RairdenLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAR. A. ShineLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAT. D. TarbellLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAA. M. TitleLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAC. J. WolfsonLockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover St., Palo Alto, CA, 94304, USAD. ElmoreHigh Altitude Observatory, National Center for Atmospheric Research, 3080 Center Green CG-1, Boulder, CO, 80301, USAA. A. NortonHigh Altitude Observatory, National Center for Atmospheric Research, 3080 Center Green CG-1, Boulder, CO, 80301, USAS. TomczykHigh Altitude Observatory, National Center for Atmospheric Research, 3080 Center Green CG-1, Boulder, CO, 80301, USA

2011en

ABI

Аннотация

The Helioseismic and Magnetic Imager (HMI) investigation (Solar Phys. doi: 10.1007/s11207-011-9834-2 , 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 front-window filter, a telescope, a set of waveplates for polarimetry, an image-stabilization system, a blocking filter, a five-stage Lyot filter with one tunable element, two wide-field tunable Michelson interferometers, a pair of 40962 pixel cameras with independent shutters, and associated electronics. Each camera takes a full-disk image roughly every 3.75 seconds giving an overall cadence of 45 seconds for the Doppler, intensity, and line-of-sight magnetic-field 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 pre-launch calibration efforts. Overviews of the investigation, details of the calibrations, data handling, and the science analysis are provided in accompanying articles.

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Идентификаторы

DOI: 10.1007/s11207-011-9842-2

Цитирования и источники

Цитирований: 3Использованных источников: 0

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