Caldwell 34 – Western Veil Nebula

The Western Veil Nebula is a supernova remnant in the constellation Cygnus, and it reaches its annual culmination at astronomical midnight and is best observed early August.

The Western Veil Nebula, catalogued as NGC 6960, is a delicate supernova remnant in the constellation Cygnus that presents one of the most rewarding targets for narrowband and broadband astrophotography alike. Its intricate, filamentary ribbons of ionized gas glow in vivid reds and teals, making it a superb subject for the classic Hydrogen-alpha and Oxygen-III bicolor palette. Because the nebula stretches across a wide field, it lends itself to fast refractors and shorter focal lengths that can capture the full sweep of its lacework structure. Long integration times reward the patient imager, as faint tendrils and subtle color gradients emerge from the background only after many hours of stacked exposure.

Names and Catalog numbers

  • Western Veil Nebula
  • C 34 (Caldwell 34)
  • NGC 6960
  • LBN 191
  • LBN 074.53-08.42

Position and the cosmic neighborhood

The Western Veil Nebula lies at right ascension 20h 45m 38s and declination +30° 42′ 30″ in the rich star fields of Cygnus, where the summer Milky Way provides a dense and colorful backdrop for wide-field frames. It forms the western edge of the larger Cygnus Loop (Sh2-103), an expansive supernova remnant spanning roughly 3.8° × 2.7° (230′ × 160′), of which the Western Veil is one prominent segment. Conveniently, the bright naked-eye star 52 Cygni sits superimposed on the nebula’s brightest filaments, serving both as a handy pointer for framing and as a striking anchor within a finished image. Imagers often compose the field to include neighboring portions of the loop, such as the Eastern Veil, for a complete portrait of this vast, delicate structure.

Nice to Know

  • The Western Veil Nebula is also known by the designations Caldwell 34, LBN 191, and NGC 6960, giving it a place in multiple observing and imaging catalogs.
  • It is only one part of the much larger Cygnus Loop (Sh2-103), the full shell of an ancient supernova remnant in Cygnus.
  • The bright star 52 Cygni appears projected directly onto the nebula, making the Western Veil especially easy to locate and frame during setup.
  • Its filamentary structure responds beautifully to narrowband imaging, where Hydrogen-alpha and Oxygen-III data reveal contrasting red and blue-green threads in stunning detail.

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