The Lynds Dark Nebula catalog was compiled by astronomer Beverly Turner Lynds in the mid-1960s while working at the Kitt Peak National Observatory. She made significant contributions to the study of interstellar matter and star formation. These nebulae are a type of interstellar cloud composed primarily of dust and gas that appears dark or opaque against the background of bright stars or glowing emission nebulae. Dark nebulae do not emit visible light themselves. Instead, they block or absorb the light from background stars or other bright sources, creating a silhouette-like appearance. They are primarily composed of microscopic dust particles, such as carbon-based compounds and silicates, along with cold molecular gas, typically made up of molecular hydrogen (H2).
This image, roughly 1.5 by 1 degree, contains six of these LDN objects: 122, 118, 115, 129, 132, and 146, listed counterclockwise starting from the top left. All six combined silhouettes form what I see as "The Dementors Nebula," inspired by J.K. Rowling's Harry Potter saga.
In the background, more than ten galaxies can be observed as well, with PGC 160996 being the most noticeable, with its spiral arms clearly visible despite its very small apparent size.
Camera: ZWO ASI2600M Color
Telescope: Astro-Physics 130mm f/6.3 StarFire GTX Refractor "Gran Turismo"
Total exposure: 40 x 5 min
Location: Observatorio La Banderita, La Pampa, Argentina