• The total solar eclipse of April 8, 2024, Mexico

    The total solar eclipse of April 8, 2024, Mexico

    A brief history of the Solar Eclipse phenomenon Records of observed solar eclipses extend back at least 3000 years. In ancient times, civilisations attributed solar eclipses to various myths and stories and surviving textual sources have provided us with basic information about these events. However, the information contained in such ancient texts is often scant…

  • Solar disk in white-light March 24 2024

    Solar disk in white-light March 24 2024

    Image of the solar disk taken on March 24, 2024. A huge group of sunspots is located almost in the central part of the solar disk. It is over 10 times the Earth’s diameter. The image was obtained with observation equipment that will be used during the total solar eclipse on April 8, 2024. A…

  • How it started

    How it started

    In 1899, five years after establishing the first Bulgarian astronomical observatory in Sofia,Marin Bachevarov started regular sunspot observations with his students with the foremost telescope in Bulgaria – a 6-inch refractor [1] . In the mid-XXth century Angel Bonov lays the foundation of solar physics in Bulgaria with hisstudies on the 22- [2] , 44-…