NGC_6826 is a planetary nebula located in the constellation Cygnus. It is approximately 2,500 light-years away from Earth and is often referred to as the "Blinking Planetary" due to its unique visual effect. When viewed through a telescope, it appears to change brightness, giving the impression of blinking. The nebula was discovered by William Herschel in 1787. It has a central star that is a white dwarf, which is the remnant of a star that has shed its outer layers. NGC_6826 is notable for its distinct structure, featuring a bright central region surrounded by a faint halo of gas and dust.