360 degree digital dome screen is the standard hemispherical dome screen. 

The dome screen thickness : 1mm; dome screen micro hole aperture: 2mm; hole center distance: 4mm; screen panel perforation rate: 22.6% hyperbolic forming panel splicing technology. It is widely used in planetariums and other cinema entertainment places. And can be sprayed to meet the screen coating with various projection needs, to reflect the users' needs for the images requirements.

http://www.jdcxplanetarium.com/