Rendering menu > Panorama Exporter
Utilities panel > Utilities rollout > More button > Utilities dialog > Panorama Exporter
The Panorama Exporter is a rendering utility that lets you create and then view 360 degree spherical panoramas.
Note: You need at least one camera in your scene to use the Panorama Exporter.

The Panorama Exporter rollout has two buttons, which let you create or view a panoramic rendering.
Render—Opens the Render Setup dialog for the Panorama Exporter.
Viewer— Opens the Panorama Exporter viewer.