100 Hours of Astronomy (100HA) is a Cornerstone project of the International Year of Astronomy 2009 (IYA2009), a worldwide celebration composed of a broad range of activities aimed at involving the public. 100HA took place over four 24-hours days, continuously from 2-5 April 2009. During this period, people from around the globe shared the experience and wonders of observing the sky. For many, it has been their first glimpse of the marvels of the heavens through a telescope. For others, the perfect opportunity to impart their knowledge and excitement, helping unveil the cosmos to fresh and eager eyes.

Pere Pallé, chair of the HELAS Forum, participated in this initiative from the SolarLab at the Observatorio del Teide. a total of six instruments which operate continuously (on a daily basis and in some cases for more than 25 years) over day and night-time and with a unique and precise scientific observing program. The owners of the instruments are different but the IAC researchers are responsible for their operation and actively participate in their scientific exploitation through the different established consortia. The primary objective is the study of the Sun's interior through the unique tools provided by Helioseismology. In recent years, the scientific scope was extended by the incorporation of instruments devoted to Asteroseismology and detection of Exoplanets transits.

Link:
http://www.100hoursofastronomy.org/
http://www.100hoursofastronomy.org/component/content/article/153

Watch:
http://www.ustream.tv/recorded/1336628