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The Bruce Murray Space Image Library

Comparison of the pixel scales of Mars orbiters

Filed under Mars Global Surveyor, Mars Odyssey, scale comparisons, amateur image processing, NASA Mars missions before 1996, Mars Express, explaining technology, explaining image processing, Mars Reconnaissance Orbiter

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Comparison of the pixel scales of Mars orbiters Each square on the image represents the size of one pixel, or picture element, in each image. (This is not the same as the size of the entire image; each camera captures images that measure different numbers of pixels across.) The depth of the stack of squares represents the number of filters or channels in which the camera is capable of cpaturing images, a measure of its color-sensing ability. (By comparison, the human eye has three such channels.) Smaller squares, and taller stacks, are considered better than bigger squares and shorter stacks.

Emily Lakdawalla

A PDF version of this diagram is also available.

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. For uses not allowed by that license, contact us to request publication permission from the copyright holder: Emily Lakdawalla


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