Your task is to destroy six transponders. Note you can use SELECT to see a map and help you figure out where they are. The first, luckily, is right in front of you. Use square at the bolt and walk around it to expose the rods. Then hit the rods to destroy the transponder.
Use Select for a map to show the rest. You're on a tiny sphere world!! Just look for beams of green light pointing into the sky to find them.
A few are just on the ground. After you get those, find the blast pads. These look like squares on the ground with arrows with floating lights over them. Press X on them to super jump.
For one it's just a superjump and then use it. For one there's a super jump and then other super jumps over to the turner. For the final one, you jump up, up again, then hop over to bolt and destroy it. Mission complete. "Good work my boy!"
When you're done, you see a video about a temporary membership card for the Desert Riders.
Ratchet and Clank 2 Going Commando Walkthrough