Yes, but only in Starry Night Pro, Pro Plus and Astrophoto Suite. Digital Download and Enthusiast is limited to a field of view of 100 degrees (what a typical human normally sees).

Choose Preferences from the File menu (Windows) or the Starry Night Pro menu (Macintosh), choose General from the dropbox in the upper left corner of the Preferences dialog box, and check the box marked “Allow Maximum Zoom Out”. Then continue zooming out using the left zoom button until you have a circular field of view of 180°, which is the entire hemisphere of sky that is above the horizon at any one time. Then choose File->Print to print this image.