The primary is a very close double, which appears, however, to be opening out rather rapidly.
Immediately below Equuleus are the stars [alpha]^{1} and [alpha]^2 Capricorni, seen as a naked-eye double to the right of and above [beta].
Both [alpha]^1 and [alpha]^2 are yellow; [alpha]^2 is of the 3rd, [alpha]^1 of the 4th magnitude; in a good telescope five stars are seen, the other three being blue, ash-coloured, and lilac.

The star [beta] Capricorni is also a wide double, the components yellow and blue, with many telescopic companions.
To the right of Equuleus, towards the west-south-west is the constellation Delphinus.

The upper left-hand star of the rhombus of stars forming the head of the Delphinus is the star [gamma] Delphini, a rather easy double (see Plate 5), the components being nearly 12" apart, their magnitudes 4 and 7, their colours golden yellow and flushed grey.
Turn we next to the charming double Albireo, on the beak of Cygnus, about 36 deg.

above the horizon towards the west.

The components are 34-1/2" apart, their magnitudes 3 and 6, their colours orange-yellow, and blue.
It has been supposed (perhaps on insufficient evidence) that this star is merely an optical double.