.SSD File Extension
File Type 1WindowBlinds Skin File List
What is an SSD file?
Text file that contains a list of skins within a WindowBlinds skin (.WBA) file; includes the number of skins and the title and filename of each skin; serves as a pointer to the corresponding .UIS and .SSS skin files.
File Type 2Starry Night Pro Data File
.SSD File Association 2
Data file used by Starry Night Pro, a program that helps users observe constellations; may contain objects, such as planets, or databases.
If you add any objects with the Orbit Editor, the SSD files will be stored in the Sky Data folder. Also, any database you add will be located in the same folder.