NGC 6822 Barnard's Galaxy

A very interesting object; I photographed it over several days in late September and early October 2026 in Adygea. NGC 6822 is a dwarf irregular galaxy in the constellation Sagittarius. The distance is about 1.6 million light-years, the diameter is 7,000 light-years, and the angular size is quite substantial at 15.4'x14.2'.
The galaxy itself is quite faint, but several diffuse nebulae (regions of ionized hydrogen) can be distinguished.

Barnard's Galaxy is the first object, apart from the Magellanic Clouds, for which its extragalactic nature was proven. Edwin Hubble in 1925 proved that NGC 6822 is at a distance of more than 700 thousand light-years. This was done on the basis of observations of 11 Cepheids and 5 bright H-alpha regions, which I tried to capture. The object is not easy to observe (no higher than 30° at the latitude of Adygea), and it is also not easy to process.

Pixel math in the Siril program was used to isolate the H-alpha regions.