This is the Observatory of the Mansion.
The roof is a dome of glass. No projectors. No video equipment. Daylight hours negate the influence of the room. Starlight bids a control panel rise from the center of the room on a podium.
One button evaporates all clouds in view. A dial dims or buffs the starlight from nought to dazzling. A slider multiplies the stars from none to sand. Switches change the mix of colors. Triggers fire meteors across the sky.