(click daily image to jump daily archive)
2016-May 2016-Jun 2016-Jul 2016-Aug 2016-Sep 2016-Oct 2016-Nov 2016-Dec
2017-Jan 2017-Feb 2017-Mar
Before 2016 Apr (previous system)
2005-Jul 2006-Jul 2007-Jul 2008-Jul 2009-Jul 2010-Jul
2011-Jul 2012-Jul 2013-Jul 2014-Jul 2015-Jul
Solar Dynamics Doppler Imager(SDDI) was installed on SMART in the
end of 2016-Apr to observe the motion of filaments eruptions.
In contrast to the previous observing system, which was able to observe the velocity of filament eruptions up to 60km/sec, the new system can capture the velocity up to 400km/sec.
The wavelength designated on the data is not exact because of the slight variation of the central wavelength of the Lyot filter due to the temperature excursion.
To deduce the exact line-of-sight velocity, a calibration of the wavelength is necessary by referring to spatial average of the solar disk. If you conduct a quantitative analysis using the SDDI data, please contact us.
SMART/SDDI was supported by MEXT/JSPS KAKENHI Grant Number 15H05814.