Albireo (Beta Cygni) is a 3rd-magnitude double star in the constellation Cygnus. Albireo A, a golden-yellow star, is itself a double star, but its companion is too close to be observed. Albireo B is a fainter blue star (Takahashi TOA-130 refractor and Sbig STL-11000 CCD camera; 60-minute exposure with RGB filters).