LDEF (Prelaunch), AO201 : Interplanetary Dust Experiment, Tray C09 The prelaunch photograph shows the location of four LDEF experiments integrated into a three (3) inch deep LDEF tray. The Interplanetary Dust Experiment (IDE) is located in the right end of the integrated tray. The eighty (80) detectors, metal-oxide-silicon (MOS) capacitor-type impact sensors, bonded into anodized aluminum frames, are attached to the aluminum mounting with non-magnetic stainless steel fasteners. A solar sensor, four (4) silicon solar cells in series, on an aluminum baseplate is shown in the approximate center of the IDE mounting plate. The different colors seen on the detectors is the reflection of stacks of LDEF experiment shipping containers in the detectors metallic, mirror-like, surface.