Cygnus, the celestial Swan, flies toward lower right
and to the horizon, great Deneb, seen toward the upper left, marking
its tail. Albireo, down and to the right, marks the Swan's head,
Sadr, just up and to the left of center, its breast, Gienah
Cygni (down and to the left of center) the east wing,
and Delta Cygni the west wing. Zeta is down toward bottom left,
Eta down and to the right of center.
Cygnus reversed becomes the Northern Cross, Deneb
now at the top, Albireo at the foot,
the arms of the cross stretching from upper right
to lower left, Sadr at the intersection. The "luminous blue
variable" P Cygni is just down and to the right of Sadr,
while 61 Cygni is the right hand star of the triangle
at far left center; 29 Cyg is just down and to the right
of Pi, while 59 Cyg is the middle of the three stars toward the upper
left corner. The Mira variable Chi Cygni, which lies
well up and to the left of Albireo, is here too faint to be seen.
The "Omicrons" are at top center, Omicron-2 (32 Cygni) on top,
Omicron-1 (31 Cygni) at the bottom. Just to the upper right of
Omicron-1 and barely resolved from it is 30 Cygni. The two stars just above far left center are Sigma
(top) and Tau. V1334 Cyg is just up and to the left of Tau, while Lambda is
immediately above Gienah. Lambda and Gienah point directly downward to 52 Cyg, while
55 Cyg is just up and to the left of Deneb. 59 Cyg is the middle of the three stars up and to
the left of 55; 68 Cyg is to the left of and a bit up from Xi. Kappa, Mu, and
Psi Cyg are off the top of the picture; see them on the expanded view of the
The black hole binary Cygnus X-1 is near the center of the picture, and
can be seen on the deep image.
The Milky Way is faintly visible in the background. Deneb lies at the
northeastern apex of the Summer Triangle.