@misc{indiciae274469921da7,
  title = {Wide-Angle, Flat-Field Telescope},
  author = {Hallam, K. L. and Howell, B. J. and Wilson, M. E.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870000064},
  note = {Source identifier: 19870000064}
}