Sardis
From Wookieepedia, the Star Wars wiki.
Similar to the Droid Control Ship fielded by the Trade Federation at the Blockade of Naboo, this vessel acted as both hangar and control ship for a new generation of droid fighters many times more lethal than the Vulture droids of the Confederacy of Independent Systems during the clone wars.
The Rebel Alliance only ever encountered the Sardis during their successful attempt to destroy the research station Obsidian. However, the Imperials had been caught unawares, and the Sardis was unable to perform to its peak, either because it was uncrewed, or its systems were not yet operational. The research ship was designated a primary target and gave no apparent defensive fire as a squadron of B-wings led by Ace Azzameen destroyed it and the station, effectively ending the program.
