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Author Topic:   the googlemap UFOs
RAZD
Member (Idle past 1427 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 21 of 43 (210320)
05-21-2005 10:21 PM
Reply to: Message 20 by arachnophilia
05-21-2005 8:26 PM


Re: on a grid
As a side note, IIRC, photos taken for mapping are usually strictly maintained on altitude and are taken stereoscopically so that they can be viewed and digitized to make topological maps. Noon-time is usually avoided as it is useful to have shadows to help determine heights of objects like buildings. Contact USGS for more information.
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we are limited in our ability to understand
by our ability to understand
RebelAAmerican.Zen[Deist
{{{Buddha walks off laughing with joy}}}

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 Message 20 by arachnophilia, posted 05-21-2005 8:26 PM arachnophilia has replied

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RAZD
Member (Idle past 1427 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 23 of 43 (210324)
05-21-2005 10:38 PM
Reply to: Message 22 by arachnophilia
05-21-2005 10:35 PM


Re: on a grid
yeah I followed it. The only other cause I could figure was something like date stamping but setting gps derived coordinates, but that would require digital cameras. I believe the cameras are pretty massive and expensive. We had a tour of one of the mapping sites when I was in school.

we are limited in our ability to understand
by our ability to understand
RebelAAmerican.Zen[Deist
{{{Buddha walks off laughing with joy}}}

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 Message 22 by arachnophilia, posted 05-21-2005 10:35 PM arachnophilia has replied

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RAZD
Member (Idle past 1427 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 25 of 43 (210327)
05-21-2005 10:54 PM
Reply to: Message 24 by arachnophilia
05-21-2005 10:52 PM


Re: on a grid
Yeah, I discounted that thought early because of that. But it must be a slow day, that was all I could come up with.

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RAZD
Member (Idle past 1427 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 36 of 43 (210984)
05-24-2005 9:16 PM
Reply to: Message 30 by NosyNed
05-23-2005 7:41 PM


Re: In the 'news'
once you have concluded that it "must" be near the ground, then the blurryness can only be explained by vibration or movement, and movement can be ruled out because the blurryness is omnidirectional.
of course a different conclusion is that the shadows are from the plane and the blurryness is due to proximity within the focal length.

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