Arrey 1949 Blue Book documents (combined PDF)

Read from the scan by GLM-OCR; expect the odd misread word.

On 24 April 1949, three miles north of Arroyo, New Mexico, four Navy enlisted men from White Sands Proving Ground and I saw a rapidly moving object while making a pibal wind run. So released a 350 gram balloon at about 1020 MST and were following it with a standard ML-47 David White Theodolite. After the 1030 reading, took over the theodolite and Alora and I looked up to find the balloon with naked eyes. We thought we had the balloon when we picked up a whitish spherical object right along the direction the theodolite was pointing (45° elevation and 210° azimuth). The object was drifting east rapidly (5° ascend an estimated by stepwatch and width of fingers), but we had thought to encounter similar winds on the balloon. When the difference in direction between the theodolite and supposed balloon became apparent, I took over the theodolite and found the true balloon still there, whereupon I abandoned it and picked up the object after it came out of the sun (this gives another good boaring if you wish to work out a sun shot at 1033 MST at Arroyo). The object was moving too fast to crank the theodolite around; therefore, one of the men pointed the theodolite and I looked. The object was an ellipsoid about 2½1 standard nose ratio, and the length was about .02° subtended angle. It was white in color except for a light yellow of one side as though it were in shadow. I could not get a hard focus on the object due to the speed at which the angles changed. Therefore, I saw no good detail at all.

The axiuth angle continued to decrease as the object continued on a north heading, growing smaller in size. At around $ 2 0^{\circ}-2 5^{\circ} $ axiuth the axiuth held constant and the elevation angle bead decreasing from the $ 2 5^{\circ} $ minimum to

and #1

ED