Stretching across the constellation Lacerta, LBN 437 is a faint cometary globule approximately 1,200 light-years from Earth. Its unusual outline has inspired the nickname “The Gecko Nebula”: a bright, compact head on the left appears connected to a long, curling body and tail extending across the surrounding darkness.
LBN 437 is more than a strangely shaped cloud. It is an active stellar nursery whose gas and dust have been illuminated, compressed, and sculpted by radiation from nearby massive stars. Within its dense head lies the young Herbig Ae star LkHα 233, which is associated with powerful outflows and several Herbig-Haro objects. These are small regions of glowing gas produced when material expelled by a forming star collides with the surrounding cloud.
Scientific observations suggest that the magnetic field within LBN 437 follows the curved shape of the globule’s head. Molecular-gas studies have also detected possible inward-moving material there, indicating that the cloud may still be collapsing and forming new stars.
This image combines broadband luminance and RGB data with eight hours of hydrogen-alpha exposure. The broadband data reveal the dusty structure, reflection nebulosity, and natural colors of the stars, while hydrogen-alpha records the faint glow of ionized gas. The restrained processing was intended to preserve the subdued character of this object while making its intricate internal structure visible.
This image was created using a combination of broadband luminance and RGB data with narrowband hydrogen-alpha data acquired from Arnold, California. The data were collected between September 21, 2025, and June 6, 2026, using 304 individual exposures with a total integration time of 25.4 hours.