The eclipse predicted for the triple system b Per (HD 26961) is underway, about a week late. Photometry is urgently needed to follow the rest of the eclipse, which may last up to four days. Please see AAVSO Special Notice #333 [1] for details.
Thank you and good observing - Elizabeth Waagen, AAVSO HQ
Links:
[1] http://www.aavso.org/aavso-special-notice-333
[2] http://www.aavso.org/forums/variable-star-observing/campaigns-observation-reports