Astrophysical: Solar eclipses

  • Publication
    A new determination of the solar granulation contrast
    The contrast of the photospheric granulation in the centre of the disk at a wavelength of 500 nm has been determined by means of photographs taken during the...
  • News
    Chile and Argentina feature in the next solar eclipse
    On July 2nd there will be a total eclipse of the sun which will touch land only in Chile, Argentina, and on the island of Oeno a small corral atol in the centre...
  • Publication
    On the width distribution of penumbral filaments in sunspots
    The width distribution of the penumbral filaments is estimated using white light photographs obtained with a vacuum, Newtonian type telescope. Observations were...
  • Publication
    Submillimeter brightness spike at the solar limb
    Submillimeter observations made with a rapid-scanning interferometer during the solar eclipse of June 30, 1973 are reported. Reduction, correction, and plotting...
  • Publication
    The Canary Islands' astrophysical observatories - A European community project
    The development of astrophysical observatories in the Canary Islands by the European community is discussed. Consideration is given to principal astronomical...
  • News
    The IAC brings the partial solar eclipse of 29 March closer to the public
    This Saturday, 29 March 2025, the Instituto de Astrofísica de Canarias (IAC) was able to follow the partial solar eclipse from the Teide Observatory in Tenerife...
  • Publication
    Umbral dots - A case of penetrative convection between sunspot fragments
    A study of the observations made on the development and, in some cases, even the decay of 15 large active regions is presented. It is shown that the mature...