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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.
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## CONFIDENTIAL one you're concerned with. That's about the Y-axis; that was 0.1. I don't know whether the sine of that agrees at all with the approximation of 0.1 that we got in the Sun check. We didn't torque those angles. The ideal was to get a gravity direction and then to do a two-star alignment and look at the torquing angles after the two-star check which would then give an indication as to what the drift had been since the last alignment. The initial gravity alignment, combined with the two-star alignment, would produce a new location of the landing site. Had we landed straight ahead, my intent was to use Rigel in the left detent number 6 and Capella in the right detent. The 13-degree yaw moved Capella out of the right-rear detent, but Rigel was in good shape there. That's the one I used first. I then selected Navi in number 4 detent, the right rear, and that wasn't particularly satisfactory. It was quite dim and it took a good bit longer than I had hoped to get the marks on that. I can't comment particularly on the star-angle difference other than it was a little disappointing in that it was 00009. Torquing angles we have recorded, and we did torque. The latitude and longitude — we'd have to listen to the guidance people as to just what ## CONFIDENTIAL
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