So far as I can tell, Edward Dowdye never made any observations that would be relevant to gravitational lensing. Such observations would not been part of his job at NASA, according to
his biography at Beyond Mainstream Science:
Dr. Dowdye was an electrical engineer (retired) at Goddard Space Flight Center, where he worked with satellite born laser systems, precision laser optics and the life-time performance of various non-linear crystals used for the generation of specific harmonics of a high energy Neodymium YAG infrared Laser.
That biography is duplicated word-for-word at other dubious sites, but
his biography as stated at a less biased site makes no mention of him working at NASA. That these biographies are trying to describe the same person is evident from
personal details in the obituary published when he died in 2020.
Unlike
Bjarne,
Dowdye knew how to derive exactly the same equation for gravitational lensing that Einstein and Eddington had published in 1920. Dowdye, however, believed that equation was inconsistent with observations:
There is convincing observational evidence that a direct interaction between light and gravitation in empty vacuum space simply does not occur. Historically, all evidence of light bending has been observed predominantly near the thin plasma rim of the sun
Unfortunately for Dr Dowdye's argument, the part I highlighted is simply not true. The twin quasar
Q0957+561 had been discovered in 1979, and the Einstein Cross
Q2237+030 in 1990. Dowdye, writing in 2007, should have known of those and other examples of gravitational lensing, but apparently found it convenient to ignore the rapidly accumulating body of observations that contradicted his desired conclusion.