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This is Volume 1 of NASA's Apollo 11 Technical Crew Debriefing, dated July 31, 1969. The Mission Operations Branch of the Flight Crew Support Division at the Manned Spacecraft Center in Houston prepared it, and it was originally classified Confidential. In it Armstrong, Aldrin and Collins go phase by phase through suiting, launch, powered flight, Earth orbit and lunar surface activities. They comment on suit fit, vibration, checklists, lunar dust, footing and poor sleeping conditions in the lunar module. A section titled Visual Sightings appears in the table of contents.
# CONFIDENTIAL between 10 and 15 degrees to give the high gain antenna more margin. This seemed to enable a satisfactory highbit-rate condition, but it did degrade our ability to observe the surface through the LPD and make downrange and crossrange position checks. I don't think that our altitude checks were significantly degraded. I can't explain why we had some dropouts there. The angles, 220 in pitch and yaw 30, are not ones that would lead you to believe they would give you trouble as far as interferences from the LM structure. It seemed to me that the initial lockon was not bad. There is a certain rain dance you had to go through each time you'd come around to acquire lockon. Each time you'd have LOS, we'd usually be on the OMNI's. Of course, there's a choice of forward or aft. Then you'd want to switch to SLEW and slew in the proper values for the steerable. Before LOS on the other side, the ground would like you to not break lock in the slew mode, because in some cases the antenna would then drive into the stops. So, approaching LOS, you'd switch to maybe the aft OMNI and then you'd slew in some new numbers. We'd make use of pitch 90 and yaw zero, to keep the ## CONFIDENTIAL
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