Short documentary on the Earthrise photo

This is awesome.
Earthrise: Recreating an Iconic Moment in Space History

Watched it on the NASA channel earlier today. So cool what they did to recreate the photo and how they did it. If you go to the LRO website there is some fascinating information and awesome images, even some of the Apollo landing sites.

Firemike wrote in post #16543555
Watched it on the NASA channel earlier today. So cool what they did to recreate the photo and how they did it. If you go to the LRO website there is some fascinating information and awesome images, even some of the Apollo landing sites.

Naw, damn incredible how they managed to recreate the events with such precision!

I want the Hasselblad that is still on the moon.

250th at f/11 - now we know.

Thanks for posting!

KirkS518 wrote in post #16544460
250th at f/11 - now we know.

Thanks for posting!

He actually meant 250mm and f/11. We don't know for sure what shutter speed he used, but it should have been about double the ISO value of the film considering everything in the scene was in full sun.

JeffreyG wrote in post #16544599
He actually meant 250mm and f/11. We don't know for sure what shutter speed he used, but it should have been about double the ISO value of the film considering everything in the scene was in full sun.

It could have been the shutter speed, too...1/250 f/11 = 1/125 f/16 with ISO 125 color transparency film...Sunny 16. Intermediate shutter speeds (1/160, 1/200) were not available on shutters of the day.
Moony 11 simply accounts for the perceived greater brightness of the moon -- which is what we are accustomed to seeing -- fooling the meter, so it necessitates EC to get it to what our minds tell us -- but Sunny (Earthy) 16 applies.
(Note: All ISO values were expressed as ASA numbers back then...)
Back in 1968 there was ISO 160 High Speed Ektachrome color transparency film, which in 1968 Kodak started to also push process to ISO 400. The moon shot was on Ektachrome, likely High Speed, as the regular Ektachrome was about ISO40/50

[edit: now we know it was ordinary Ektachrome ASA (ISO) 64 emulsion] and that 1/250 f/11 was simply one of three bracketed exposures shot with a purely mechanical Hasselblad...no meter, no electronic shutter, only a motorized 70mm film back in the Hasselblad EL.]

In researching the history a bit, I learned that the custom modified Hasselblad EL was loaded with a 70 mm film magazine containing custom Ektachrome film developed by Kodak. A further recounting of events says, "Anders took the first color shot, then Lovell who notes the setting (1/250th of a second at f/11), followed by Anders with another two at varying exposures."

The film was has been stated as:
"Apollo 8 film stowage is as follows: 3 magazines of Panatomic-X intermediate speed black and white for total 600 frames; 2 magazines SO-368 (ASA 64) Ektachrome color reversal for total 352 frames; 1 magazine SO-121 Ektachrome special daylight color reversal for total 160 frames; and 1 magazine 2485 high-speed black and white (ASA 6,000, push to 16,000) for dim-light photography, total 120 frames. Motion picture film: 9 130-foot magazines SO-368 for total 1170 feet, and 2 magazines SO-168 high speed interior color for total 260 feet.” And by verbal reference to C-368 we know that ASA 64 Ektachrome was used for the Earthrise shots.

On another forum, a former Kodak engineer who worked on the efforts at Kodak to make prints of the Earthrise shot, explained that the Ekatchrome emulsion was coated on extra thin Estar media so more film could be fit into one back and thus more exposures per unit weight. That explains the reference to 'custom Ektachrome' made earlier.

Wilt.... Wow! I really think it's cool you looked into that... but.... you have too much time on your hands to research all that!

That's some cool detail Wilt.

I think it would have been cool for the simulation/documentary folks to make a guess as to the astronaut's orientation inside the craft, and put the moon on the right in the video. As it is though, it's a really educational piece.