Atmosphere starry sky light for festival entertainment

An atmosphere starry sky light for festival entertainment, comprising:

• a constellation unit, a planetary unit, a starry sky unit and a background unit,
• wherein:
• the constellation unit is configured to switch patterns of twelve constellations and perform projection display on the patterns of the twelve constellations;
• the starry sky unit is configured to project a starry sky background;
• the background unit is configured to project patterns of aurora, clouds, and ripples;
• the planetary unit is configured to switch patterns of a planet, and to project and display a planetary image;
• and
• the constellation unit, the planetary unit, the starry sky unit and the background unit form a panoramic image of a starry sky by superimposing and combining;
• wherein the constellation unit is provided with a DOE grating combination disk, the DOE grating combination disk is provided with a twelve constellation pattern, a constellation pattern DOE grating lens is arranged above the DOE grating combination disk, a laser generator is provided below the DOE grating combination disk, an optical path of the laser generator emitting laser light is divided into two paths by a beam splitter, in which one optical path passes through the DOE grating combination disk and forms the twelve constellation pattern on the constellation pattern DOE grating lens, and the other optical path is directed to a stars imaging DOE grating lens under a starry sky imaging DOE grating lens in the starry sky unit.