The station consisted of multiple giant turbines that could generate a vortex within the atmosphere of whichever planet it was orbiting. On top of the turbine array was a hangar used to store Imperial starfighters. There was also docking moors for capital ships on the sides.
The TIEs would fly out through the calm central 'eye' in the vortex and return once the attacks were complete. Upon receiving a special transponder signal from each fighter, engineers aboard the Achtnak Station would start the turbines and re-open the vortex.
With the vortex closed, no trace could be found through either instrumental or visual scan of Yavin's storm-wracked clouds; the TIEs would have appeared to vanish in thin air.
Only because he was tracking Baron Tagge's personal ship was Luke Skywalker in the right place at the right time to see the vortex opening to receive supplies. Achtnak Station was destroyed by Luke, who infiltrated it using a stolen TIE containing a salvaged transponder. As a result, Baron Tagge swore vengeance on the young Rebel.
- Geonosis and the Outer Rim Worlds (First identified as Achtnak Turbine Station)
- The New Essential Chronology
- The Complete Star Wars Encyclopedia