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Originally posted by scobro
Thanx for the link.
What a beautiful planet Mars is.
No, that photo, as that page states, is from Mars Global Surveyor, while HiRISE is an experiment aboard Mars Reconnaissance Orbiter.
Originally posted by Acharya
The "golf ball" you can see to the left is from HiRISE and it supposedly measures 150 meters, but this is the maximum resolution image there is of it, and the resolution is more like 5 meters per pixel in the image.
The Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) science investigation used 3 instruments: a narrow angle camera that obtained grayscale (black-and-white) high resolution images (typically 1.5 to 12 m per pixel) and red and blue wide angle cameras for context (240 m per pixel) and daily global imaging (7.5 km per pixel). MOC operated in Mars orbit between September 1997 and November 2006. It returned more than 240,000 images spanning portions of 4.8 Martian years.
The perspective views have been calculated from the digital terrain model derived from the stereo channels.