Limits on radiative decays of solar neutrinos from a measurement during   a solar eclipse
  A search for possible radiative decays of solar neutrinos with emission of photons in the visible range was performed during the total solar eclipse of August 11, 1999. Due to very bad weather conditions our two telescopes were unable to collect useful data; fortunately we obtained several video camera images from a local TV station. An analysis of the digitised images is presented and limits on the lifetime for radiative decay are discussed. 
S. Cecchini, G. Giacomelli, R. Giacomelli, D. Hasegan, O. Maris, V.   Popa, R. Serra, M. Serrazanetti, L. Stefanov, L. Tasca...