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.
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. 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 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.
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