Double and Multiple Stars ![]() Albireo Aa,Ac | MCA 55 Aa,Ac | SAO 87301 | WDS J19307+2758Aa,Ac . . Separation 0.335″ | PA≈46 | Aa: 3.37 mag - K3 II | Ac: 5.16mag - B9,5 V
The criterion of the diffraction limit of resolution - Newton 320/1500 . ![]() Albireo B - Aa,Ac . ![]() |