apollo 11: 100% perfect picture without seeker, page 7
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ATS Members have flagged this thread 32 times


reply posted on 16-1-2010 @ 09:25 AM by wmd_2008
reply to post by GArnold





Look here for a great flag explanation.

www.youtube.com.../u/3/GbJvgqoeFSU

[edit on 16-1-2010 by wmd_2008]


reply posted on 16-1-2010 @ 09:44 AM by wmd_2008
reply to post by aspx



Well telescopes are designed to gather LIGHT thats more important than magnification.

IIRC max magnification for Hubble is about 5000x distance to moon on average 238,857 miles divide by 5000 = 47.7 miles
So moon would still look 47.7 miles away a lander is about 15 foot across from
47.7 miles away how big would it look
It has been worked out the smallest object the Hubble could resolve on the moon would be about just under 300ft across does that answer your question.

[edit on 16-1-2010 by wmd_2008]

[edit on 16-1-2010 by wmd_2008]


reply posted on 16-1-2010 @ 12:59 PM by wmd_2008
Originally posted by shakespear1
Some Russian guy did some photo analysis of Moon landing and presents his work here


Photos


A couple of problems with his parrallax pictures Hassblad astronauts used is medium format camera was the camera used to take women and baby shots the same format.
Displacement on astronauts pics more horizontal /woman and baby more vertical distance from camera to astronauts different than woman and baby.
They will also be differences caused by the focal length of the lens on each camera and if the film format is different.

This link shows how focal length can effect the perspective look at
400mm and 2oomm lens shots on this page taken from same position look how the position of CN Tower chages in position due to the focal lentgh change so I dont agree with his results.

www.luminous-landscape.com...

He would need a Hasselblad with same lens as astronauts with objects set up same way to prove his point.


reply posted on 17-1-2010 @ 02:42 AM by mixmix
reply to post by shakespear1



Thanks for the link.

The flat horizon is an interesting question.


Thanks wmd_2008 to wake up this thread

[edit on 17-1-2010 by mixmix]


reply posted on 17-1-2010 @ 04:52 AM by Saint Exupery
Originally posted by shakespear1
Some Russian guy did some photo analysis of Moon landing and presents his work here


Photos


From the Link
The photographs were used in new large-format 500-mm camera...


He misunderstood. The Apollo 15 (and 16 & 17) astronauts had the same type of Hasselblad 70mm-film cameras as the previous missions. However, in addition to the 80mm-focal-length Zeiss-Biogon lense (which was detachable), these missions also carried a longer lense that, when attathed, gave a focal length of 500mm. This enabled them to take telephoto pictures of small features on the distant mountains.

None of the images that he shows in his analysis were taken with the 500mm lense. All of images he shows were taken with the Zeiss-Biogon lense. It should be pointed-out that this wide-angle lense caused some distortion near the edges of the frame, and I can speak from personal experience that this can skew interpretation of parallax.

Beyond that, I'd have to crunch some numbers on his range estimates. I also think we should try some photographic tests on features at comparable ranges (assuming my 2-year old gives me the time... )
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