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.
