news
Submitted on 2006-05-12
Once a year, we bundle all our activities and publications of the past year in a document. All projects and services on which we are currently are described. It fits in the bulky report of the Royal Observatory of Belgium, one of the 10 scientific federal institutes.
Submitted on 2006-04-12
Above a drawing of the total solar eclipse observed in El-Sallum, Egypt on March 29 by Miyoshi Suzuki (contributor to the SIDC observing network). The shape of the corona was typical of the minimum phase of solar activity. The corona spreads trough about 3 solar diameter on the equator and spreads trough about one solar diameter above the poles.
Submitted on 2006-03-28
On March 27, a completely renewed website was launched. By restructuring all data and info, we hope to offer a better service. Therefore, we invite you to surf on our new solar wave.
Submitted on 2005-12-20
Maybe you noticed: the daily ursigrams and geoalert have changed a little! From today onwards, we provide an estimation of the International Sunspot Number, in short: the Estimated ISN.
Submitted on 2005-12-06
Ten years ago, SOHO, the Solar and Heliospheric Observatory, was launched. The satellite is able to watch the Sun continuously. It was meant to stay operational for 2 years, but now, 10 years later, it still is! The SIDC is closely involved in the EIT and LASCO instruments, which prove to be very valuable to do the space weather forecast.
Submitted on 2005-11-08
As active as was the Sun in September, as quiet is it now. Both the 10.7 cm solar radio flux and the International Sunspot Number are pointing to solar minimum.
Submitted on 2005-10-28
Since October 21, the x-ray radiation dropped below the A-level. After the turbulent presence of the big sunspot 37/0808 during September, the Sun is taking a break. The 'All-quiet-alert' that was broadcast since Wednesday is still valid.
Submitted on 2005-10-03
The solar telescope of the SIDC caught the moon in front of the Sun. The result in visible light and in the H-alpha wavelength is shown below.
Submitted on 2005-09-08
Yesterday, September 7, the GOES satellite detected a strongly enhanced x-ray flux. The curve went up to X17, the saturation level of the satellite! In the ranks, this is the fourth biggest flare since 1976 according to IPS.
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