ISS025-E-8532 Click the photo number to access all resolutions available and the database record.
Houston is home to the NASA Johnson Space Center and is notable among major U.S. metropolitan areas for its lack of formal zoning ordinances. (Other forms of regulation play a similar role here.) This leads to highly mixed land use within the city. Around Reliant Park you can find large asphalt parking lots, vacant lots with a mixture of grass and exposed topsoil, and both single- and multi-family residential areas. A forested area (dark green, lower left) is located less than two kilometers from the parking lots.
This subset of a handheld digital camera image has a spatial resolution of 2 to 3 meters per pixel (or picture element), making it one of the highest spatial resolution images ever obtained from the International Space Station (ISS). Such high resolution was made possible by using lens “doublers” to increase the optical magnification of camera lenses. Active ISS motion compensation is also important; the astronaut must pan the camera by hand at just the right rate, keeping the object at the same point in the viewfinder. The technique involves bracing yourself against the space station bulkhead to prevent movement related to weightlessness. Traditional short lens photography is easier because it does not require motion compensation.
