Welcome to the Solar Influences Data Analysis Center (SIDC), which is the solar physics research department of the Royal Observatory of Belgium. The SIDC includes the World Data Center for the sunspot index and the ISES Regional Warning Center Brussels for space weather forecasting.



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Latest SWAP image

SWAP latest image

Latest USET H-alpha image
USET latest Halpha image

Latest LYRA curve

Latest LYRA Curves

Latest Callisto Observations

Latest HUMAIN Callisto qkl

Daily estimated sunspot number
EISN

Latest News

Feb 23, 2017: A stretched coronal hole

Feb 01, 2017: STCE Workshop

Jan 27, 2017: The Moon in sight

Jan 24, 2017: Low 10.7 cm radio flux

Jan 16, 2017: RoboSWOP in a space game EUFHORIA looking for sunspot treasures

click here for all the news items



Good to know

7th Solar Information Processing Workshop - Registration and abstract submission is OPEN, August 17-22, 2014

ESWW11, 17-21 November, 2014 - Abstract submission is OPEN

STCE Workshop - Long Term Solar Changes and their effect on Earth, May 19, 2014

STCE Workshop - Physical processes in solar-terrestrial plasmas, May 22 - 23, 2014

STCE Workshop - Modelling antennas & calibration of radio instruments, June 6, 2014

STCE 2014 annual meeting, June 12, 2014