Iris Nebula

The Iris Nebula was discovered by the famous British astronomer Sir William Herschel on October 18, 1794. Herschel was a prolific observer who also discovered the planet Uranus. The nebula was later included in the New General Catalogue as NGC 7023.

The Iris Nebula is located in the constellation Cepheus, roughly 1,300 light-years away from Earth. It sits high in the northern sky, making it a popular deep-sky target for amateur astronomers during the autumn and winter months. It can be found in the Milky Way band near the border of Cepheus and Cygnus.

The Iris Nebula is a reflection nebula, meaning it does not emit its own light. Instead, the dense interstellar dust clouds reflect the bright blue light of the massive, young star HD 200775. This scattering of light is similar to how Earth's atmosphere scatters sunlight to make the daytime sky look blue.

It was given the name 'Iris Nebula' due to its visual resemblance to the blooming flower when captured in long-exposure astrophotography. The central glowing star acts as the flower's core, while the sweeping, curved dust petals frame the surrounding field. The bluish hue from the starlight reflecting off the dust adds to the floral imagery.