What KInd Of Camera Takes Google Earth Photos ?

  • 4 Replies
  • 5631 Views

0 Members and 1 Guest are viewing this topic.

*

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • 20602
    • View Profile
What KInd Of Camera Takes Google Earth Photos ?
« on: 31/03/2009 18:24:42 »
Hi All,

As ewe know Google Earth can have ewe zoom in like this and get some quite nice detail...Actually, The photography in Virtual Earth is really good too...

[attachment=7845]

What kind of camera is used to take these photos ?..are they all satellite based or are some on airomobiles  ? How high up are these cameras ?


Thanks


Neil
xxxxx


Men are the same as women, just inside out !

*

Offline LeeE

  • Neilep Level Member
  • ******
  • 3382
    • View Profile
    • Spatial
What KInd Of Camera Takes Google Earth Photos ?
« Reply #1 on: 31/03/2009 19:05:21 »
For that level of zoom, I believe most of the images are from aircraft, at a guess, flying between 5000-10000ft (based on some images that have captured aircraft flying in VFR conditions and out of the airways, which I think puts them below 3000ft).
...And its claws are as big as cups, and for some reason it's got a tremendous fear of stamps! And Mrs Doyle was telling me it's got magnets on its tail, so if you're made out of metal it can attach itself to you! And instead of a mouth it's got four arses!

*

Offline graham.d

  • Neilep Level Member
  • ******
  • 2208
    • View Profile
What KInd Of Camera Takes Google Earth Photos ?
« Reply #2 on: 02/04/2009 18:25:36 »
Some of the images are from aircraft and some from satellite. That particular image, I believe, could be from either though I think satellite. Images from aircraft can be much better and I guess, therefore, would be the higher resolution ones. The satellite ones can be better too, but are not available for commercial applications. A clue is that many images are taken in early morning (the sun is low) when there is often clearer skies - you sometimes also have problems with cloud which you can observe to be a long way down.

A further clue is that very many pics are at oblique angles and corrected to look like a map-view; you can tell this because you can see the sides of tall buildings and, if you tilt and move the view around, you can work out from where the picture was taken. Pics from satellites have to make good use of the time available and the orbit positions are limited. My guess is that aircraft pics would be mostly directly downwards and are taken from aircraft used for mapping purposes - I may be wrong though because aircraft time isn't cheap either. I think Google attribute where they buy there pics from though don't say which are which.

*

Offline Yomi

  • Hero Member
  • *****
  • 548
  • HERE IN AM TO TAKE AWAY THE NOBEL PRIZE
    • View Profile
What KInd Of Camera Takes Google Earth Photos ?
« Reply #3 on: 04/04/2009 16:44:42 »
its ts just a satellite camera
MAHESH

*

Offline Don_1

  • Neilep Level Member
  • ******
  • 6890
  • A stupid comment for every occasion.
    • View Profile
    • Knight Light Haulage
What KInd Of Camera Takes Google Earth Photos ?
« Reply #4 on: 04/04/2009 17:25:38 »
Here's how it's done http://pict-earth.blogspot.com/
« Last Edit: 04/04/2009 17:27:10 by Don_1 »
If brains were made of dynamite, I wouldn't have enough to blow my nose.