Page 118 - Lunacy and the Age of Deception

Society. (The authors are British, hence the British spelling of certain words.) Following is an
excerpt from the appendix of Dark Moon.

Film Strip 8 contains correct exposures (1/60th sec @ f5.6) of the test chart which were then
exposed to 25 rem of ionising radiation (8MeV x-rays). The film was processed in the normal (E6)
manner. The images although visible are seriously damaged rendering them unusable.

Film Strip 9 contains correct exposures (1/60th sec @ f5.6) of the test chart which were then
exposed to 50 rem of ionising radiation (8MeV x-rays). The film was processed in the normal (E6)
manner. The images are barely visible, the x-rays having near obliterated the latent images.

Film Strip 10 contains correct exposures (1/60th sec @ f5.6) of the test chart which were then
exposed to 100 rem of ionising radiation (8MeV x-rays). The film was processed in the normal (E6)
manner. The images are completely obliterated by the x-rays.

Discussion
Ektrachrome ISO 160 appears to be significantly sensitive to x-rays. Above 100 rem exposure to x-
rays any latent image is completely obliterated. Between 50 rem and 25 rem exposure to x-rays the
remaining image is visible, but extremely faint. The estimated radiation dose required to degrade
the image to the level produced by four hours exposure to the maximum temperature expected on
the lunar surface (+82.2 C) is estimated from the above results to be in the order of only 5 rem.

Conclusion
Even a modest radiation dose to the film (5 rem and greater) would produce significant reduction
of contrast and image density in the resulting Ektachrome ISO 160T transparencies.

Evaluation of High Temperature on Ektachrome ISO 160... Film...
Introduction
The following test was undertaken with fresh Ektachrome 160T Film.
According to NASA’s own data, the Temperature range the Hasselblad 500 EL/700 camera was
subjected to whilst on the lunar surface was +180° F (+82.2° C) to -180° F (-117.8° C).
This range of temperature is well outside Kodak’s recommendation. The purpose of this
investigation was to establish the behaviour of Ektachrome ISO 160 roll film when used at the high
end of the temperature range...

Results
When compared to the control strip, the resulting transparencies in test strip 7 show significant
‘lightening’ apparent both on the test patches and on the unexposed areas of the film between and
to the side of each exposed image.

Conclusion
Extended exposure to the higher end of NASA’s anticipated temperature range on the lunar surface
may be expected to significantly decrease the image density of the resulting Ektachrome ISO 160
transparencies.
[Dark Moon, Mary Bennett and David S. Percy]