NEBULAE
Reflection Nebula
— IC 5076 (VdB 137) —

Processed by Nicolas Rolland, Paris. 6.9 hours gathered by Roboscope at Apollo 11 Observatory, Fregenal de la Sierra, Spain.
IC 5076, also known as vdB 137, is a reflection nebula located in the constellation Cygnus, about 2° north of the North America Nebula. It is situated at an estimated distance of 1750 parsecs (approximately 5700 light-years) and is part of the same galactic region as the Cygnus X nebular complex. Nearby, the open cluster NGC 6910 can be observed a few arcminutes to the south.
This nebula is associated with the star HD 199478, a blue supergiant of spectral class B8Iae. The star exhibits strong emission lines, characteristic of Be stars, and is classified as a pulsating variable under the designation V2140 Cygni. Its apparent magnitude is 5.73, with brightness variations of about 0.1 magnitude.
To capture this image, a Planewave CDK17 telescope (432mm) was used, paired with a FLI Kepler 4040 CMOS camera and Astronomik Deep-Sky LRGB filters. A total of 45 frames, amounting to 4.2 hours of exposure, were stacked. Post-processing techniques were applied to adjust contrast and levels, bringing out subtle details such as the background nebula.