Correspondence regarding astronomical calculations for a sighting at Presque Isle

This document consists of two letters exchanged between Dr. H. Marshall Chadwell and Professor J. Allen Hynek in December 1952. The correspondence concerns the identification of an unidentified object observed at Presque Isle. In his letter dated December 23, 1952, Professor Hynek provides astronomical calculations to Dr. Chadwell, explaining that while theodolite observations can be prone to errors such as incorrect scale readings or zero point errors, the data collected at Presque Isle strongly suggests the object was the planet Jupiter. Hynek notes that the observed azimuth of 163 degrees and elevation of 58.5 degrees, combined with the object's rate of motion, align closely with the expected position of Jupiter. In his response dated December 29, 1952, Dr. Chadwell acknowledges receipt of these calculations, expresses agreement with Hynek's findings, and thanks him for his assistance as a consultant.