تقرير
Design and Ground Calibration of the Helioseismic and Magnetic Imager (HMI) Instrument on the Solar Dynamics Observatory (SDO)
| العنوان: | Design and Ground Calibration of the Helioseismic and Magnetic Imager (HMI) Instrument on the Solar Dynamics Observatory (SDO) |
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| المؤلفون: | Schou, J, Scherrer, P. H, Bush, R. I, Wachter, R, Couvidat, S, Rabello-Soares, M. C, Bogart, R. S, Hoeksema, J. T, Liu, Y, Duvall, T. L., Jr, Akin, D. J, Allard, B. A, Miles, J. W, Rairden, R, Shine, R. A, Tarbell, T. D, Title, A. M, Wolfson, C. J, Elmore, D. F, Norton, A. A, Tomczyk, S |
| المصدر: | Solar Physics. 275(2-Jan) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | Spacecraft Instrumentation And Astrionics, Solar Physics |
| الوصف: | The Helioseismic and Magnetic Imager (HMI) investigation 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 Fe I absorption line. The instrument consists of a front-window filter, a telescope, a set of wave plates 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 4096(exo 2) 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. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 0038-0938 |
| DOI: | 10.1007/s11207-011-9842-2 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20140007405 |
| ملاحظات: | NAS2-97001 NAS5-02139 NNG09FA40C |
| رقم الأكسشن: | edsnas.20140007405 |
| قاعدة البيانات: | NASA Technical Reports |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 00380938 |
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| DOI: | 10.1007/s11207-011-9842-2 |