Located at the eastern tip of the famous Coathanger asterism (Collinder 399) in Vulpecula, NGC 6802 is a charming, often-overlooked open cluster that rewards careful star-hoppers. While most observers focus their sights on the striking "hooks" and "barbs" of the bright Coathanger itself, drifting just a fraction of a degree east of the asterism’s eastern flank reveals this faint cosmic jewel. At 8.8 magnitude, NGC 6802 is too faint to be easily resolved in ordinary hand-held binoculars, appearing as little more than a subtle, elongated smudge of light pressed against the rich starlight of the summer Milky Way. Yet its location makes finding it a delight: simply center the easternmost star of the Coathanger (7 Vulpeculae) and sweep slightly east to catch its delicate, misty presence.
Through a small-to-medium telescope around 80mm to 105mm, NGC 6802 begins to unveil its true character. Rather than a spherical splash of stars, the cluster presents a distinctly rectangular, boxy profile—spanning roughly 5' by 2'—that stretches north-south like a glowing bar of celestial dust. Moderate magnification (80 to 120) breaks the uniform haze into a fine, granular glow, where a handful of faint 13th- and 14th-magnitude stars begin to glint at the limits of vision. The sensation is like looking at a tiny, rectangular open cluster trying its best to imitate a faint background galaxy or a very loose globular, with subtle stellar chains running along its main axis.
What makes NGC 6802 so delightful to observe is its contrast against the surrounding star field. Sitting roughly 3,700 light-years away, it rests on the edge of a dark dust lane that helps frame its soft glow against the surrounding background scatter. Larger apertures (6- to 8-inch instruments) expand the population, resolving twenty to thirty individual stars that glitter like fine diamond dust scattered across black velvet. It is a classic target for a quiet summer or early autumn night—a subtle, rectangular veil of suns that showcases the quiet magic hidden just beyond the bright, famous landmarks of the northern sky.