The camera starts filming at the same time that the ullage motors fire. By 0:05, the explosive bolts and retros are firing, 0.2 sec RT after. S-IC sep takes about 0.1 seconds from the bolts firing. (0:08) The J-2 start command is 1.9 sec after the ullage motors, and ignite 1.0 sec later, taking another 1.0 sec to reach 90% thrust. Total firing time for the ullage motors is supposed to be 4.5 sec. Interstage sep (5:10) should be about 30.0 sec after the ullage ignition. So this is about 1/10 RT
@SeverEnergia Yes, it is. After impact in the Atlantic, the S-II stage wouldn't float (even if it doesn't break up during re-entry, it crushes flat on impact), so the cameras were jettisoned so that they *would* float and could be recovered.
@SeverEnergia Yes, it is. After impact in the Atlantic, the S-II stage wouldn't float (even if it doesn't break up during re-entry, it crushes flat on impact), so the cameras were jettisoned so that they *would* float and could be recovered.
@eventconeThe reason you can't see stars in high oblique photos is that the film speed is too slow and the shutter speed is too fast. Most of the films used are 100 ASA color positive. Fast shutter speeds are used to eliminate blur from the motion of the spacecraft. These films and shutter speeds would not be suitable for photographing stars from the Earth either.
@eventcone If you have an ipod or iphone or even go to the nasa. gov sight you can see things for yourself if you go on the nasa channel if you get it you can watch live footage of astronauts in the space station and you can't see stars either out there window and if you don't believe we have a space station up there then I give up on you, you can see the space station from earth looks like a big star moving like a plane across the sky
@SkatingIsMyWayOfLife Thank you for your reply Skating. However, you seem to have misunderstood the meaning of my post.
I'm fully aware of why there are no stars visible in these films. I simply could not resist pointing this out to those deluded people who continue to present the absence of stars as part of their "evidence" that the moon landings were faked. (i.e. my comments were addressed to the "Conspiracy Theorists"). I guess pretty soon they'll be claiming that ALL spaceflight is faked.
@misium I can't remember exactly where I came across this little fact. Since seeing this particular sequence for the 1st time (whilst watching "For All Mankind" in 1989) I had always assumed that the pictures were transmitted to earth. However it seems they were "film", the cannisters of which were jettisoned from the 2nd stage, re-entered the atmosphere and were recovered from the ocean.
I'm happy video like this survives. It gives clues to how space technologies can be used. Sadly, traditional rocket technology was stunted by the Shuttle program, but I hope that the latter gives lessons on reusability and lightweight alloys. I suspect that the Falcon series is as good a candidate for any of combining the cheap rocket stack with the resuable modules.
@zgrillo2004 Actually, it may have been shot at 15x speed, but this playback is at one-quarter realtime; the delay between S-IC jettison and interstage/skirt jettison was about 30 seconds realtime
The camera starts filming at the same time that the ullage motors fire. By 0:05, the explosive bolts and retros are firing, 0.2 sec RT after. S-IC sep takes about 0.1 seconds from the bolts firing. (0:08) The J-2 start command is 1.9 sec after the ullage motors, and ignite 1.0 sec later, taking another 1.0 sec to reach 90% thrust. Total firing time for the ullage motors is supposed to be 4.5 sec. Interstage sep (5:10) should be about 30.0 sec after the ullage ignition. So this is about 1/10 RT
chunkstyle5 1 month ago
The clouds look real nice at 2:20 - 2:47 ... until the camera flew off....
MechaDragon09 9 months ago
Is the camera capsule ejecting at 2:45?
SeverEnergia 1 year ago
@SeverEnergia Yes, it is. After impact in the Atlantic, the S-II stage wouldn't float (even if it doesn't break up during re-entry, it crushes flat on impact), so the cameras were jettisoned so that they *would* float and could be recovered.
rdfox76 5 months ago
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@SeverEnergia Yes, it is. After impact in the Atlantic, the S-II stage wouldn't float (even if it doesn't break up during re-entry, it crushes flat on impact), so the cameras were jettisoned so that they *would* float and could be recovered.
rdfox76 5 months ago
Great piece of footage, all the more impressive for how they retrieved the film cannisters.
Conspiracy theorists please note:
1. You can't see the stars
2. You can't see the "rocket exhaust"
eventcone 1 year ago 13
@eventconeThe reason you can't see stars in high oblique photos is that the film speed is too slow and the shutter speed is too fast. Most of the films used are 100 ASA color positive. Fast shutter speeds are used to eliminate blur from the motion of the spacecraft. These films and shutter speeds would not be suitable for photographing stars from the Earth either.
SkatingIsMyWayOfLife 11 months ago
@eventcone If you have an ipod or iphone or even go to the nasa. gov sight you can see things for yourself if you go on the nasa channel if you get it you can watch live footage of astronauts in the space station and you can't see stars either out there window and if you don't believe we have a space station up there then I give up on you, you can see the space station from earth looks like a big star moving like a plane across the sky
SkatingIsMyWayOfLife 11 months ago
@SkatingIsMyWayOfLife Thank you for your reply Skating. However, you seem to have misunderstood the meaning of my post.
I'm fully aware of why there are no stars visible in these films. I simply could not resist pointing this out to those deluded people who continue to present the absence of stars as part of their "evidence" that the moon landings were faked. (i.e. my comments were addressed to the "Conspiracy Theorists"). I guess pretty soon they'll be claiming that ALL spaceflight is faked.
eventcone 11 months ago 3
@eventcone A seriously flawed group of people!
sakoshooter48 10 months ago
@eventcone you can't see the stars because the earths reflection is causing glare
not all rocket exhaust burns bright
JakeL33T989 8 months ago
@eventcone you can't see the stars because the earths reflection is causing glare
not all rocket exhaust burns bright
you can see the exhaust hitting the interstage at 2:10
JakeL33T989 8 months ago
@JakeL33T989 Yes Jake, I know.See my reply to SkatingIsMWayOfLife. :-)
eventcone 8 months ago
@eventcone Are you sure it was recorded on board and not televised down to earth and recorded there?
misium 6 months ago
@misium I can't remember exactly where I came across this little fact. Since seeing this particular sequence for the 1st time (whilst watching "For All Mankind" in 1989) I had always assumed that the pictures were transmitted to earth. However it seems they were "film", the cannisters of which were jettisoned from the 2nd stage, re-entered the atmosphere and were recovered from the ocean.
There's an entry under Apollo 4 in Wikipedia.
eventcone 6 months ago
I'm happy video like this survives. It gives clues to how space technologies can be used. Sadly, traditional rocket technology was stunted by the Shuttle program, but I hope that the latter gives lessons on reusability and lightweight alloys. I suspect that the Falcon series is as good a candidate for any of combining the cheap rocket stack with the resuable modules.
brianranzoni 1 year ago
What fraction of realtime is this video?
oisiaa 1 year ago
@oisiaa I believe 15 times slower
zgrillo2004 1 year ago
@zgrillo2004 Actually, it may have been shot at 15x speed, but this playback is at one-quarter realtime; the delay between S-IC jettison and interstage/skirt jettison was about 30 seconds realtime
rdfox76 5 months ago
it's amazing that they could do all of this stuff in the 60's with many different technologies in their respective infancies at the time.
bromeo4484 2 years ago
Excelent video !
gfast2 2 years ago 2