说说登月相机胶片耐受温度的问题

来源: 2011-11-19 16:27:06 [博客] [旧帖] [给我悄悄话] 本文已被阅读:

在网上大致查了一下,没有看到官方的数据,这里有一些讨论。

http://www.clavius.org/bibwgreen.html

The film used was the Ektachrome E-3 emulsion on the special-purpose Estar thin base. Estar is made from polyester and was specially made for high-altitude surveillance photography where it would have to endure temperatures as low as -50 F (-40 C). The E-3 emulsion is good to that temperature and below. Polyester melts at about 550 F (260 C). The emulsion, however, would be rendered chemically ineffective before the emulsion melted.

The film was able to withstand some pretty strong extremes of temperature.