NGC 7008 — Planetary Nebula in Cygnus

NGC 7008, the Fetus Nebula, is a planetary nebula in northern Cygnus, about 2,800 light-years away, named for the curled, embryo-like shape of its asymmetric main lobe in deep images. The nebula is moderately compact at about 1.4 arcminutes diameter, with a clearly bipolar or pinched structure — one end of the cloud is bright and round while the other tapers and dims. A close visual binary star sits superimposed on the nebula's southern edge, adding visual interest at the eyepiece. At magnitude 10.7 NGC 7008 is fainter than many planetary highlights but its peculiar shape makes it memorable.

From a dark site, a 4-inch at moderate power shows a small, irregular oval glow. An 8-inch at 150-200x with an OIII or UHC filter reveals the asymmetric shape clearly, with the brighter southern lobe clearly more concentrated than the fainter northern extension. The double star embedded near the southern edge — both components around magnitude 9 — adds a fine touch. Star-hop from Alpha Cygni (Deneb) about 8 degrees north. Best observed July through November.

Discovered by William Herschel on 13 October 1787. The 'Fetus' nickname emerged in 20th-century amateur observing notes, capturing the curled, asymmetric form visible in deep visual observations and early photographs.