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3 LH 744 Takeoff In Line - Google Earth  
User currently offlineBmacleod From Canada, joined Aug 2001, 2278 posts, RR: 0
Posted (8 years 2 weeks 5 days 7 hours ago) and read 9374 times:

Just noticed on Google Earth at Frankfurt International 3 LH 747-400s just after takeoff all lined up a little too close to each other...... scared 


The engine is the heart of an airplane, but the pilot is its soul.
16 replies: All unread, jump to last
 
User currently offlineSuperhub From Hong Kong, joined Jan 2006, 478 posts, RR: 0
Reply 1, posted (8 years 2 weeks 5 days 7 hours ago) and read 9359 times:

Most likely you are getting 3 shots of the same plane...since photos on Google Earth are not taken at the same time, but at different times.

User currently offlineFoxBravo From United States of America, joined Nov 2003, 2998 posts, RR: 4
Reply 2, posted (8 years 2 weeks 5 days 7 hours ago) and read 9336 times:

This came up once before--it's the same plane. I think there was a similar quirk at another airport too.


Common sense is not so common. -Voltaire
User currently offlineIkramerica From United States of America, joined May 2005, 21531 posts, RR: 59
Reply 3, posted (8 years 2 weeks 5 days 7 hours ago) and read 9285 times:

Quoting Superhub (Reply 1):
Most likely you are getting 3 shots of the same plane...since photos on Google Earth are not taken at the same time, but at different times.

Yes, it seems google uses an imprecise stitching algorithm that puts ghosts of planes and cars and such all over the place.



Of all the things to worry about... the Wookie has no pants.
User currently offlineIberiaA319 From Spain, joined Sep 2005, 574 posts, RR: 38
Reply 4, posted (8 years 2 weeks 5 days 7 hours ago) and read 9261 times:

You missed one of the most popular threads on a.net. Big grin Big grin

See:

Three LH 744 Unusually Close - Google Image (by B747FAN Apr 4 2006 in Civil Aviation)


User currently offlineDazeflight From Germany, joined Jun 1999, 580 posts, RR: 2
Reply 5, posted (8 years 2 weeks 5 days 4 hours ago) and read 9030 times:

Quoting Ikramerica (Reply 3):
Quoting Superhub (Reply 1):
Most likely you are getting 3 shots of the same plane...since photos on Google Earth are not taken at the same time, but at different times.

Yes, it seems google uses an imprecise stitching algorithm that puts ghosts of planes and cars and such all over the place.

Nope. Those pictures are Aerial, not Satellite Pictures. Therefore, bordering smaller images have been shot within a tiny time difference from a plane flying above the scene. The same effect can be observed with trains.


User currently offlineA300605R From Germany, joined Nov 2005, 136 posts, RR: 0
Reply 6, posted (8 years 2 weeks 5 days 3 hours ago) and read 8940 times:

Quoting Dazeflight (Reply 5):
Nope. Those pictures are Aerial, not Satellite Pictures.

That's not right, google earth uses satellite images from sensors such as the Landsat-family, Quickbird or Ikonos for best geometric resolution. Satellite imagery covers the whole planet, time resolution is good (at least one shot a year without clouds should be possible, even in tropical areas) and -that's the biggest pro- is much cheaper than aerial pictures. In addition to that, google can get these scenes completely processed and rectified, means ready-to-use.

Guess the edges of three scenes cover this area at FRA --> Voilá the three 744.
 old   duck 
Aloha



300 319 320 321 332 733 734 735 738 753 763 F27 M83
User currently offlineA319114 From Netherlands, joined Aug 2004, 541 posts, RR: 3
Reply 7, posted (8 years 2 weeks 4 days 13 hours ago) and read 8506 times:

Quoting A300605R (Reply 6):

Actually, Google Earth uses a mix of both (sat and aerial)



Destruction leads to a very rough road but it also breeds creation
User currently offlineNewark777 From United States of America, joined Dec 2004, 9348 posts, RR: 29
Reply 8, posted (8 years 2 weeks 4 days 13 hours ago) and read 8337 times:

Quoting A300605R (Reply 6):
That's not right, google earth uses satellite images

You shouldn't be correcting people on things you obviously don't know about. As A319114 said, there is a mix of both types of photography, and this looks to be aerial.

Harry



Why grab a Heine when you can grab a Busch?
User currently offlineA300605R From Germany, joined Nov 2005, 136 posts, RR: 0
Reply 9, posted (8 years 2 weeks 4 days 11 hours ago) and read 6913 times:

Quoting A319114 (Reply 7):
Actually, Google Earth uses a mix of both (sat and aerial)

Ok, accepted. Learning is a never ending process...

Quoting Newark777 (Reply 8):
You shouldn't be correcting people on things you obviously don't know about.

If I had known this better, I wouldn't have corrected Dazeflight. I haven't known yet that google also uses aerial photos, so I was wrong here.

Quoting Newark777 (Reply 8):
and this looks to be aerial.

What's your argumentation? Why does it look to be aerial?
This looks to be a mosaiced precision-Ikonos product to me: 4 m multispectral 8 bit with 0.2 mb data per square km. Taken at three different times as the revision time is appr. 3 days at 40° lat. Ikonos crosses FRA every three days at the same time of day.
But we had this diskussion in another thread.



300 319 320 321 332 733 734 735 738 753 763 F27 M83
User currently offlineLH450 From Germany, joined Jan 2005, 54 posts, RR: 0
Reply 10, posted (8 years 2 weeks 4 days 11 hours ago) and read 6717 times:

Has someone ever seen a plane inflight with contrail? I'm always searching for something like that but without succes. Is it possible to see it or is the cam on the satellite focused on the ground?

LH450 Smile



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User currently offlineNewark777 From United States of America, joined Dec 2004, 9348 posts, RR: 29
Reply 11, posted (8 years 2 weeks 4 days 11 hours ago) and read 6615 times:

Quoting LH450 (Reply 10):
Has someone ever seen a plane inflight with contrail? I'm always searching for something like that but without succes. Is it possible to see it or is the cam on the satellite focused on the ground?

Yes, many. Here's a link to a kmz file with all of the known aircraft in flight.

http://bbs.keyhole.com/ubb/showflat....0/Number/360116/an/0/page/0#360116

Quoting A300605R (Reply 9):
This looks to be a mosaiced precision-Ikonos product to me: 4 m multispectral 8 bit with 0.2 mb data per square km. Taken at three different times as the revision time is appr. 3 days at 40° lat. Ikonos crosses FRA every three days at the same time of day.

If you're that confident, I'll take your word for it.

Harry



Why grab a Heine when you can grab a Busch?
User currently offlineIberiaA319 From Spain, joined Sep 2005, 574 posts, RR: 38
Reply 12, posted (8 years 2 weeks 4 days 11 hours ago) and read 6478 times:

Quoting Newark777 (Reply 11):
Yes, many. Here's a link to a kmz file with all of the known aircraft in flight.

http://bbs.keyhole.com/ubb/showflat....60116

Yes true, this placemark is available in Google Earth's forum (once again):

http://bbs.keyhole.com/ubb/showflat....0/Number/360116/an/0/page/0#360116

There's a specific thread about contrails, also with a placemark of each:

http://bbs.keyhole.com/ubb/showthrea...php/Cat/0/Number/423047/page//vc/1


User currently offlineA300605R From Germany, joined Nov 2005, 136 posts, RR: 0
Reply 13, posted (8 years 2 weeks 4 days 11 hours ago) and read 6389 times:

Quoting LH450 (Reply 10):
Is it possible to see it or is the cam on the satellite focused on the ground?

Earth observing satellites usually fly in orbits of about 700-800 km. The higher the spatial resolution (area covered by one pixel) is, the lower usually is the Swath width (Area covered by one shot). I dont' think, that a sensor with high spatial resolution (like the mentioned Ikonos (1-4 m)) will catch an airplane inflight over the atlantic or somewhere as the satellite moves around the globe. It should need coincidence to catch an airplane inside the (small) swath.

Sensors with "low resolution" like Modis (250m-1km) can catch contrails, but no airplanes. Modis is used to understand the atmosphere, and as a part of it the influences of contrails on our climate.

Contrails over Lake Superior ( OrbView-2/SeaWiFS, Visualization Date
2000-10-09)
http://veimages.gsfc.nasa.gov/1364/S2000283182849_md.jpg

Contrails over New Foundland (Sensor as above, Vis. Date 1999-05-04)
http://veimages.gsfc.nasa.gov/1213/S1999124155610.jpg

 spin 



300 319 320 321 332 733 734 735 738 753 763 F27 M83
User currently offlineA300605R From Germany, joined Nov 2005, 136 posts, RR: 0
Reply 14, posted (8 years 2 weeks 4 days 10 hours ago) and read 6299 times:

Quoting Newark777 (Reply 11):

I can't proof it, it's just my thought on this.
But I'm familiar with Remote Sensing a little...

 wave 



300 319 320 321 332 733 734 735 738 753 763 F27 M83
User currently offlineEvan767 From United States of America, joined Aug 2005, 2957 posts, RR: 2
Reply 15, posted (8 years 2 weeks 4 days 9 hours ago) and read 5451 times:

Quoting IberiaA319 (Reply 4):
Three LH 744 Unusually Close - Google Image



Quoting Bmacleod (Thread starter):
3 LH 744 Takeoff In Line - Google Earth

Gee, I dunno how you could miss THAT in a search....



The proper term is "on final" not "on finals" bud...
User currently offlineLH450 From Germany, joined Jan 2005, 54 posts, RR: 0
Reply 16, posted (8 years 2 weeks 4 days 9 hours ago) and read 5375 times:

Thank you! All the links are very good. I've always searched for something like that! Contrails have always impressed me- god knows why.

@A300605R: Do you have more websites showing contrail-pics over Europe/Germany? I think there are existing pictures taken from NOAA satellite with a very high resolution!

Cheers Smile
LH450



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