The Skylab space station, as imaged by the departing final crew, SL-4. Parasols in the foreground cover the absent micrometeorite/sun shield, and the left solar array is missing. A windmill of solar panels surrounds the Apollo Telescope Mount, which observed multiple solar flares throughout the program. Docking ports for NASA Command Modules are located on the Multiple Docking Adapter, directly beneath the ATM.

NASA