Separation and inspection

Immediately after undocking, the CMP executed a short burn to put some distance between the two spacecraft to avoid a collision. This was a translation manoeuvre in a minus-x direction to back the CSM away from the LM at 0.3 metre (1 foot) per second. Both crews filmed each other and, especially on the early flights, the CSM would often station-keep while the LM was slowly rotated to allow it to be visually inspected and its landing gear verified.

Now flying as two separate spacecraft, two important checks had to be made before the LM would be allowed to fly away from the safety afforded by its mothership. The first looked at the main engine that would control their descent to the Moon, including the control system that throttled its thrust. The second checked the rendezvous radar that would be crucial to guide them back to the CSM.

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