The 1967 NASA technical note D-4246, Midcourse Guidance Procedure with Single Position Fix Obtained From Onboard Optical Measurements describes correcting the trajectory of a spacecraft traveling between the moon and Earth, using an on-board telescope to point at stars or other fixed objects in space. This method was later used to correct the flight of Apollo 13.
Who were the authors of this paper? Did they include anyone notable?
This question is part of a series honoring the 50th anniversary of Apollo 13, "NASA's finest hour".