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  #181 (permalink)  
Old 26-January-2008, 11:09 PM
frenat frenat is offline
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For those that can't fathom the large amounts of normal jet traffic overhead, I like to show them the graphic attached. Also helps when you realize those lines are often 20-50 miles wide and they will stack planes as close as 1000 feet apart vertically on them.
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File Type: gif jetway.gif (119.2 KB, 86 views)
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  #182 (permalink)  
Old 27-January-2008, 10:26 PM
Abaddon Abaddon is online now
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Quote:
Originally Posted by Tomblvd View Post
That brings up a question I had a while back. I was planning on heading out to Pittsburgh Int. Airport sometime to take some shots of arrivals and departures. I'm wondering what security is like around the large airports nowadays.

Am I going to get tackled and beatup if the local authorities see me with my camera and tripod?

Another question, does anybody have a idea where I could find REAL info on conrails? Another photography project I have in mind involves contrails early in the morning. I've spent the past few months trying to figure out exactly what kind of weather best shows contrails. And I can't find any consistent patterns.

It isn't a big deal, photography (esp landscape photography) is really a matter of being at the right place at the right time. But since my time is greatly limited (ahem...see earlier post), I'd like to up my chances as much as possible.

Thanks in advance.....
Tomblvd

Where I am, and at any international airport I have photographed at, there are typically areas outside the secure perimiter which are reserved for, nerds such as you and me, at which we are at liberty to take photos. I cannot say for certain in your case as I do not reside in the US. However, I am prepared to bet that if you go to one of the appointed areas for photography, you will have no problem.
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  #183 (permalink)  
Old 28-January-2008, 04:26 AM
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Quote:
Originally Posted by frenat View Post
For those that can't fathom the large amounts of normal jet traffic overhead, I like to show them the graphic attached. Also helps when you realize those lines are often 20-50 miles wide and they will stack planes as close as 1000 feet apart vertically on them.
Hmm, that map would explain the north/south aicraft I see, but it shows no east/west route.

Maybe those aren't planes that I see going east to west and vice versa.

tbm
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  #184 (permalink)  
Old 28-January-2008, 12:33 PM
Dave J Dave J is offline
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Quote:
Originally Posted by tbm View Post
Hmm, that map would explain the north/south aicraft I see, but it shows no east/west route.

Maybe those aren't planes that I see going east to west and vice versa.

tbm
Quite possibly the east/west aircraft might be on an enroute arrival/departure procedure, which aren't part of the jet airway system, but still extend for a good distance from major airports.
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  #185 (permalink)  
Old 28-January-2008, 01:39 PM
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Quote:
Originally Posted by tbm View Post
Hmm, that map would explain the north/south aicraft I see, but it shows no east/west route.

Maybe those aren't planes that I see going east to west and vice versa.

tbm
Maybe you can find more information at Flight Aware. They have real-time tracking for any airport in the US, plus this very cool 24-hour animation.
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  #186 (permalink)  
Old 28-January-2008, 05:49 PM
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Quote:
Originally Posted by tbm View Post
Hmm, that map would explain the north/south aicraft I see, but it shows no east/west route.
The map does not include Illuminati flight paths.
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  #187 (permalink)  
Old 28-January-2008, 10:01 PM
Abaddon Abaddon is online now
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I will go out on a limb here.

Question to tbm: Are you familiar with ETOPS operational restrictions?

These give rise to a scenario where at any given location you could see contrails with pretty much any orientation, if you were familiar with them
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  #188 (permalink)  
Old 28-January-2008, 10:20 PM
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Or to give it a perspective:

If I fly from London Heathrow UK to San Francisco, while one might expect to approach SFO from the east, counterintuitively, I will likely end up approaching SFO from the north.
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  #189 (permalink)  
Old 29-January-2008, 12:30 PM
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Quote:
Originally Posted by Abaddon View Post
Or to give it a perspective:

If I fly from London Heathrow UK to San Francisco, while one might expect to approach SFO from the east, counterintuitively, I will likely end up approaching SFO from the north.
Well, it's only counterintuitive if one's grasp of geography comes from 2D maps rather than a globe.
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  #190 (permalink)  
Old 29-January-2008, 02:17 PM
Larry Jacks Larry Jacks is offline
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Well, it's only counterintuitive if one's grasp of geography comes from 2D maps rather than a globe.

That's right. The easiest way to visualize great circle routes (the shortest distance on a sphere) is to run a string between the two points on a globe. The results can be surprising. If you look at a flat map, you'd think the best route to fly from San Francisco to Japan would be to head west near Hawaii. Actually, the great circle route goes pretty far north around Alaska's Aleutian Islands.
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  #191 (permalink)  
Old 29-January-2008, 02:42 PM
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Quote:
Originally Posted by Extravoice View Post
Maybe you can find more information at Flight Aware. They have real-time tracking for any airport in the US, plus this very cool 24-hour animation.
That animation is completely cool. Thanks
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  #192 (permalink)  
Old 29-January-2008, 02:45 PM
Eoanthropus Dawsoni Eoanthropus Dawsoni is offline
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At my location in North Dakota many of the Europe to California flights pass overhead. The traffic between Japan and Korea to Chicago and Atlanta also crosses over here, and on an East-West line I see the flights between Toronto, Montréal, Boston, NYC, etc heading to and from Vancouver and Seattle. It's a pretty good location for watching high altitude long distance flights.
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  #193 (permalink)  
Old 29-January-2008, 03:07 PM
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Online Great Circle Mapper
http://gc.kls2.com/

Shows route between any 2 airports if you just input their codes.

Also provides a pretty decent FAQ on the subject.
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  #194 (permalink)  
Old 04-February-2008, 08:28 PM
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A few years ago, I took a transatlantic flight. I don't fly that often, and chose to sit next to the window so I could look outside or at least lean against the bulkhead for a nap.

I was surprised at the high visibility of ships' wakes from that altitude. If I was a CT, I guess I could claim that these ships were leaving some kind of trail. After all, my sailing dinghy doesn't leave that kind of wake!
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  #195 (permalink)  
Old 04-February-2008, 10:09 PM
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Another great observation opportunity at that altitude is sundown. If you're lucky enough to be flying directly east or west at sundown, you can actually see the umbra and penumbra revealed through the interference medium of the air at that altitude, as a sort of transverse slice through it. There's a lot to be said about direct observation of planetary-scale illumination.
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  #196 (permalink)  
Old 05-February-2008, 09:18 AM
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Quote:
Originally Posted by Extravoice View Post
I was surprised at the high visibility of ships' wakes from that altitude. If I was a CT, I guess I could claim that these ships were leaving some kind of trail. After all, my sailing dinghy doesn't leave that kind of wake!
Possibly because your sailing dinghy does not have 109,000 horsepowers and a 9.6 m propeller.
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  #197 (permalink)  
Old 28-April-2008, 11:46 AM
*KKHKISHZKH* *KKHKISHZKH* is offline
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Unhappy Black lines?

Hi,
After lurking for many months, this is my 1st post. My fiance really believes in all the Chemtrails/NWO/Illuminati/Nibiru/2012 stuff. (To the point where he is leaving me, his partner of 12 years and our 3 young children to go to somewhere he believes he has a better chance of surviving. By the beginning of July, he says. I refuse to go along with it all as I pretty much think it's a load of bunkum to put it politely. But that's a very long story that i won't post here.)
Basically, I've tried to counter all his claims about chemtrails but I can't explain the black lines that are sometimes seen with a plane seemingly following them.
www.youtube.com/watch?v=nzMwFR7RMPg
Can anyone help?
I know you guys are probably sick to death of all this stuff but it's a very real and current problem for me.
Thanks.
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  #198 (permalink)  
Old 28-April-2008, 01:21 PM
Jason Thompson Jason Thompson is offline
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It's a shadow. The contrials cast shadows. Look at the other shadows and you can see that the plane is flying almost directly away from the Sun, therefore would be following the shadow cast by its own contrail.
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  #199 (permalink)  
Old 28-April-2008, 02:38 PM
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Just to echo what Jason said. Clouds can also make such shadows, not just airplane contrails. Check out this website which also has links to rocket contrail shadows and airplane contrails. The last link shows all the optics involved.
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  #200 (permalink)  
Old 28-April-2008, 04:14 PM
*KKHKISHZKH* *KKHKISHZKH* is offline
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Thanks for the replies. Those links are really useful. x
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  #201 (