Informational and analytical portal
Contacts      Subscribe

Images of Sun as of today

Below are the present-day Sun photographs taken by NASA's Observatory of solar dynamics (NASA Solar Data Analysis Center).

Special equipment (AIA) allows you to receive images of the solar atmosphere on ten allocated frequencies, whereas the image spans about 130% of the solar diameter. Such visibility allows us to study the coronary emissions.

Special processing and analysis of the data obtained in such a way allows not only to track changes, but also to predict the processes successfully that occur in the Sun atmosphere, which are caused by variation in solar activity. For example, a change in the topology of the magnetic field is associated with temperature changes in coronal plasma, and helioseismology and convective processes are associated with the temperature distribution and others.

Click on the picture to watch in a larger scale.

94  Å94 Å
1700  Å1700 Å
4500  Å4500 Å
1600  Å1600 Å
193  Å193 Å
171  Å171 Å
335  Å335 Å
131  Å131 Å
211  Å211 Å
304  Å304 Å

Table 1 - Spectral correspondence of AIA SDO data.

Channel Name AIA The region of the Sun atmosphere Primary ions The logarithm of the temperature T° K, lg(T)
Visible color Photosphere Totality 3.7
1700 Å Temperature minimum of the photosphere Totality 3.7
304 Å Chromosphere, a transition region He  II 4.7
1600 Å Transition region + upper photosphere C  IV+cont. 5.0
171 Å Quiet corona, top of the transition region Fe  IX 5.8
193 Å Corona and hot coronal emissions Fe  XII, XXIV 6.1, 7.3
211 Å Active regions of the corona Fe  XIV 6.3
335 Å Active regions of the corona Fe  XVI 6.4
94 Å Fields of flares Fe  XVIII 6.8
131 Å Fields of flares Fe  VIII, XX, XXIII 5.6, 7.0, 7.2