One of four photographs in passe-partout frames of Solar Corona taken with Lyot's "Coronagraph" (black-and-white transparencies; astrophotographs; Sun; solar corona; solar prominences; solar chromosphere)
One of four photographs in passe-partout frames of Solar Corona taken with Lyot's "Coronagraph" (black-and-white transparencies; astrophotographs; Sun; solar corona; solar prominences; solar chromosphere)
One of four photographs in passe-partout frames of Solar Corona taken with Lyot's "Coronagraph" (black-and-white transparencies; astrophotographs; Sun; solar corona; solar prominences; solar chromosphere)