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美國人“登月”的阿婆鑼項目用的照相機和膠卷(圖)

(2009-05-27 11:43:12) 下一個
這是我從網上抄來的。我瞎翻譯一下。大家湊合看吧。





美國人“登月”的阿婆鑼項目用的照相機


關於美國人“登月”的阿婆鑼項目用的照相機
Hasselblad were the manufacturer of the camera that took all of the photos on the Apollo missions. Jan Lundberg was the Manager Of Space Projects at Hasselblad from 1966 to 1975 and responsible for the production and building of the Hasselblad 500 EL/70 cameras that were used on the Apollo Missions. He says 'Originally NASA made all the alterations themselves, then they presented what they had done to us and asked if we could do the same, to which we replied yes we can, and we can do it better. We proceeded to make the alterations that were accepted by NASA.' Protective plates were added to the case and film magazine.

美國人“登月”的阿婆鑼項目的全部(all)照片(photo)都是用Hasselblad生產的Hasselblad 500 EL/70 型照相機拍攝的。1966到1975年,Jan Lundberg 是Hasselblad的空間項目經理,負責生產阿婆鑼用的Hasselblad 500 EL/70 型照相機。他說開設時NASA做了一些改動,後來他們給我們看了他們的改動問我們是否可以做,我們回答說我們可以做得更好。NASA接受了我們的產品。機身和膠卷合加了保護板。


關於美國人“登月”的阿婆鑼項目用的膠卷
H. J. P. Arnold is an astronomer and keen photographer, an expert on space and astrophotography and was the assistant to the Managing Director at Kodak during the Apollo years. He has authored many space photography books. He comments that the film that was supplied by Kodak for the missions was essentially the same as used here on Earth. it was ektachrome 64 ASA or ISO as it is called today. He has commented that you would expect to see some small dots on the films where a high velocity nuclear particle had hit the film, however no evidence of this whatsoever has come forward. The only thing that would protect the film from this damage would be a thick layer of lead around the camera casing, which according to Hasselblad was not used. Let's also remember that the films were changed whilst outside on the Moon's surface and not in a controlled environment.

H. J. P. Arnold 是一名天文學家和攝影愛好者,是空間攝影方麵的專家。在阿婆鑼項目的時候,他是柯達的Managing Director的助理。他還寫過一些空間攝影的書。他說阿婆鑼項目用的膠卷基本上(essentially)就是地球上用的膠卷,當年叫ektachrome 64 ASA現在叫ISO 。他還說由於高速粒子打擊膠卷,預料可以期看到在膠卷留下一些小斑點,但是沒有看到任何有過斑點的痕跡。唯一保護膠卷的是保護照相機的一層鉛板,據Hasselblad(生產阿婆鑼項目的照相機的廠家)說當時沒有使用保護鉛板。請大家都記住換膠卷是在月亮表麵而不是在有控製環境的條件下進行的。

An important factor to take into consideration is the great variations in temperature that the film would have had to endure whilst on the lunar surface. The temperature during the Apollo missions were recorded as being between -180F in the shade to an incredible +200F in full Sunshine. How could the film emulsion have withstood such temperature differences? The astronauts can be seen to move between the shadows of the rocks and then into full sunlight in some shots. Surely the film would have perished under such conditions?

一個重要的因素是膠卷必須承受的月亮表麵的巨大溫差。在阿婆鑼項目的時候,月亮表麵的溫度記錄是陰處-180度華氏(-118度攝氏)到陽處+200度華氏(+93度攝氏)。底片怎麽可能在這種溫差下保持正常呢?阿婆鑼項目的宇航員也從石頭的陰影處到陽處。膠卷在那種情況下肯定是要完蛋滴。

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