Portland at Night, from Space

This afternoon I came across a lovely collection of photos of major cities taken from space. I can never get enough of space imagery and I can only imagine what it must be like to be the person taking these photos. A friend asked if I had a similar picture of Portland and I knew right where to look.

Image courtesy of Earth Sciences and Image Analysis Laboratory, NASA Johnson Space Center.

Image courtesy of Earth Sciences and Image Analysis Laboratory, NASA Johnson Space Center.

NASA's Johnson Space Center maintains a large database of just about every photograph ever taken by an astronaut. Most of them are of Earth and you can search by location, date and even attributes like focal length and cloudiness. For the most part the really nice ones are picked out and made famous, but they don't have time to go through all of them. There are some hidden gems buried in the collections just waiting for someone to find!

I rotated and brightened this image to make it look better, but if you're curious the original can be found here.

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  1. Posted August 11, 2009 at 9:07 pm | Permalink

    any way to assess ambient light level from the night photo?

  2. Posted August 11, 2009 at 9:16 pm | Permalink

    Not easily. I could just blur the image (low pass filter) and have a "map" of brightness. The problem is calibration. Luckily the _Istituto di Scienza e Tecnologia dell'Inquinamento Luminoso_ (Light Pollution Science and Technology Institute) already has a great survey of light pollution.

  3. alitzel banuelos
    Posted November 5, 2009 at 5:00 pm | Permalink

    This is so allsome....i just love how earth looks....EARTH ROCKS~<=~SO DO ASTROAUTS.

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