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  Mercury - Gemini - Apollo
  apollo 11 lunar liftoff

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Author Topic:   apollo 11 lunar liftoff
mark plas
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Posts: 360
From: the Netherlands
Registered: Aug 2000

posted 07-07-2004 02:14 PM     Click Here to See the Profile for mark plas   Click Here to Email mark plas     Edit/Delete Message   Reply w/Quote
On Apollo 11 Armstrong and Aldrin left the TVcamera on the surface of the moon after their moonwalk.So why could the liftoff not have been recorded?

Yanksman2001
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posted 07-07-2004 05:34 PM     Click Here to See the Profile for Yanksman2001   Click Here to Email Yanksman2001     Edit/Delete Message   Reply w/Quote
I guess it's possible they could have shown the seconds leading up to the liftoff, but seconds before the upper stage ignited all cables and power lines to the descent stage were severed. This would have cut all power to the TV camera and the antenna beaming it back to earth

thump
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posted 07-07-2004 06:00 PM     Click Here to See the Profile for thump   Click Here to Email thump     Edit/Delete Message   Reply w/Quote
The only liftoff that was recorded through the ascent was A17. It was pretty difficult to follow due to the time it took for the signal to get from Mission Control to the camera, so the operator had to move the camera remotely before the liftoff actually occured.

Captain Apollo
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posted 07-08-2004 02:46 PM     Click Here to See the Profile for Captain Apollo   Click Here to Email Captain Apollo     Edit/Delete Message   Reply w/Quote
Wasn't a bit of 15 - or was it 16 - recorded, though the camera did not pan up

Tom
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posted 07-08-2004 03:34 PM     Click Here to See the Profile for Tom   Click Here to Email Tom     Edit/Delete Message   Reply w/Quote
Both "15" and "16" were shown live at lunar lift-off. However, only on "17" did the camera pan up and follow the ascent stage.

mark plas
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From: the Netherlands
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posted 07-08-2004 03:44 PM     Click Here to See the Profile for mark plas   Click Here to Email mark plas     Edit/Delete Message   Reply w/Quote
Didn t they pan the camera up during 15 s liftoff because it got stuck a couple of times during the EVA and after liftoff there wouldn t be a helping hand anymore to put in the normal position so they could look around after the astronauts have left the moon

Yanksman2001
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posted 07-11-2004 10:27 AM     Click Here to See the Profile for Yanksman2001   Click Here to Email Yanksman2001     Edit/Delete Message   Reply w/Quote
For Apollo 17 they were scheduled to pan up to follow the ascent stage.
For Apollo 15 and Apollo 16 they were not going to follow the ascent stage upward. The reason is they did not want to get the camera stuck in an upward position. They wanted to have the camera, which still had enough power for at least a few days to monitor the surface from changing sun angles

BLACKARROW
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posted 07-11-2004 02:15 PM           Edit/Delete Message   Reply w/Quote
Actually on Apollo 16 the camera WAS tilted up to follow the climbing ascent stage, but with only limited success. It kept the LM in view for about 6 seconds, then lost it, then picked it up again for about 7 seconds, then there was a longer gap until the LM was again picked up about a minute after lift-off, but by then it was only a bright dot fading into the distance. Then the camera tilted back down to examine the landing site and abandoned descent stage.

mark plas
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From: the Netherlands
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posted 07-11-2004 04:53 PM     Click Here to See the Profile for mark plas   Click Here to Email mark plas     Edit/Delete Message   Reply w/Quote
How lang did the LRV camera work after the crews left the moon

Yanksman2001
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posted 07-14-2004 06:47 PM     Click Here to See the Profile for Yanksman2001   Click Here to Email Yanksman2001     Edit/Delete Message   Reply w/Quote
The rover's had enought battery power for about 80 hours after liftoff

andrex
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posted 07-15-2004 11:32 AM     Click Here to See the Profile for andrex   Click Here to Email andrex     Edit/Delete Message   Reply w/Quote
In a book focusing primarily on the comms side of things

Tracking Apollo to the moon
Hamish Lindsay.
ISBN
1852332123

the author, who was involved, discusses delay and relay issues between Australia and the US (Aus. relayed Apollo 11 transmissions of egress). He mentions how the remote camera control on later missions from earth were nail biting for the operator as the delay had to be accounted for. (they did rehearsals).

As an aside, there is an Australian film (The Dish) dealing with Apollo 11 and the comms link through the dish in Canberra, please see:
http://www.imdb.com/title/tt0205873/combined

It's a feelgood film, but interesting never the less.

NB: Any Australians out there?

Mike Dixon
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From: Kew, Victoria, Australia
Registered: May 2003

posted 07-15-2004 10:43 PM     Click Here to See the Profile for Mike Dixon   Click Here to Email Mike Dixon     Edit/Delete Message   Reply w/Quote
Andrex,

Yep, me for one, Ian Whalley (hinkler)for two and "kosmonavtka" for three ... all in Melbourne. No members I can recall from QLD / WA / TAS / NT.

All times are CT (US)

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