“This distance from the camera target, coupled with the oblique (inclined) viewing angle from the ISS, results in the foreshortened appearance of urban areas in the image,” NASA explained on its Earth Observatory website. Montreal at Night was the image of the day website for Monday, Jan. 10. The photo was taken with a Nikon D3S digital camera using a 180 mm lens.
“This astronaut photograph of the city lights of Montreal illustrates the extent of urbanization,” the website explains. “Major roadways and industrial areas are traced by bright white lighting, while the adjacent residential and commercial lands are characterized by more diffuse yellow-gold lighting. Rivers and other water bodies appear black, while the surrounding countryside is faintly illuminated by moonlight. Blurry areas at image top and bottom right are caused by cloud cover.”