Fig. 10. Emphasis on the disc's surface density differences as well as the lake's luminance (f= 2.8, t = 1/8 sec.).

A number of questions are raised by this analysis. In particular, we have not been able to -provide an interpretation for the fact that the disc's image has a sharply defined edge on the sun's (right) side and a fuzzy edge on the opposite side. The possible significance of the proximity of a geologic fault line is unknown. There is no indication that the image is the product of a double exposure or a deliberate fabrication.

Computer enhancement (cf. Figures 7 and 10) emphasizes extremely small variations in background brightness. Several horizontal lines are most likely printing artifacts rather than real, environment-related effects. Another feature of interest has to do with the edge of the dark triangular region on the disc's right-hand side. Figures 7 through 10 all show that the top edge of this dark region is more convex than is its lower edge, as would be expected if the disc presented a generally conical surface of revolution.

In summary, our analyses have suggested that an unidentified, opaque, aerial object was captured on film at a maximum distance of 10,000 feet. There are no visible means of lift or propulsion and no surface markings