Of the 11 observatories planned for the Event Horizon Telescope array, 8 participated in #EHTblackhole observations in 2017. Here is a collage (with older photos!) from the #NSFfunded animation made at @saoastro, to be found on our Youtube channel -- https://t.co/U37EF3IlTI. pic.twitter.com/9UUrynnmvD

— Event Horizon 'Scope (@ehtelescope) April 8, 2019